1 00:00:06,000 --> 00:00:08,480 I'm on the cycle track 2 00:00:08,480 --> 00:00:10,120 that goes from Bodmin in Cornwall 3 00:00:10,120 --> 00:00:12,120 all the way up to Bristol. 4 00:00:12,120 --> 00:00:15,000 And it takes you through some glorious countryside. 5 00:00:16,800 --> 00:00:19,840 This bit here is particularly special. 6 00:00:22,320 --> 00:00:24,080 I always stop here 7 00:00:24,080 --> 00:00:28,800 because this seems like a perfect spot for otters. 8 00:00:28,800 --> 00:00:30,520 And, in fact, there are otters here - 9 00:00:30,520 --> 00:00:33,080 there's probably one watching us right now. 10 00:00:33,080 --> 00:00:37,320 But even though I've stopped here literally dozens of times, 11 00:00:37,320 --> 00:00:39,560 I've never seen one. 12 00:00:39,560 --> 00:00:42,160 But I'm not that surprised. 13 00:00:42,160 --> 00:00:45,040 Although otters are one of our largest carnivores, 14 00:00:45,040 --> 00:00:47,680 they're incredibly secretive and hard to see. 15 00:00:49,120 --> 00:00:53,800 40 years ago, otters very nearly became extinct in England, 16 00:00:53,800 --> 00:00:57,000 yet they seem to be making a remarkable recovery. 17 00:00:58,480 --> 00:01:04,160 But what we really know about them? Where are they? How can I see one? 18 00:01:04,160 --> 00:01:08,400 In the next hour, Springwatch's confirmed otterholics, 19 00:01:08,400 --> 00:01:11,280 Charlie Hamilton James and Simon King, 20 00:01:11,280 --> 00:01:14,200 will delve into the secret life of the otter. 21 00:01:14,200 --> 00:01:18,560 And Chris Packham will explore just what an otter's made of. 22 00:01:18,560 --> 00:01:20,800 And I'll be delving into the otter's past, 23 00:01:20,800 --> 00:01:24,280 looking forward into its future, and trying, 24 00:01:24,280 --> 00:01:26,720 with the help of some simple detective work, 25 00:01:26,720 --> 00:01:31,440 to see how you and I can actually see one for ourselves. 26 00:01:31,440 --> 00:01:35,720 So welcome to the Springwatch Guide To Otters. 27 00:02:04,680 --> 00:02:09,560 Meet the otter - one of our most charismatic animals. 28 00:02:09,560 --> 00:02:12,360 It's inquisitive, playful, elegant, 29 00:02:12,360 --> 00:02:15,000 but the otter has another side. 30 00:02:15,000 --> 00:02:16,960 It's a skilled hunter, 31 00:02:16,960 --> 00:02:21,520 fiercely territorial about guarding its patch. And what a patch! 32 00:02:23,720 --> 00:02:27,000 Otters live in some of the most gorgeous places 33 00:02:27,000 --> 00:02:28,920 in the British Isles. 34 00:02:31,120 --> 00:02:34,760 They recolonised these islands after the last ice age, 35 00:02:34,760 --> 00:02:38,640 and over 10,000 years, they've spread out from England rivers 36 00:02:38,640 --> 00:02:40,640 in the south, right up the coast 37 00:02:40,640 --> 00:02:42,920 to the northern most islands of Scotland. 38 00:02:46,720 --> 00:02:49,720 They're generally solitary, secretive creatures 39 00:02:49,720 --> 00:02:51,800 that like to keep themselves to themselves. 40 00:02:51,800 --> 00:02:55,480 You might just glimpse a swirl here, or a whiskery snout there, 41 00:02:55,480 --> 00:02:57,560 before it vanishes in the water, 42 00:02:57,560 --> 00:02:59,920 leaving nothing but a trail of bubbles. 43 00:03:05,400 --> 00:03:08,280 So what kind of animal is the otter? 44 00:03:08,280 --> 00:03:10,680 It's time to meet the family. Chris. 45 00:03:12,080 --> 00:03:16,040 Well, the otter is a member of the mustelid family of mammals. 46 00:03:16,040 --> 00:03:18,240 There are 54 species across the world, 47 00:03:18,240 --> 00:03:21,880 but we have seven in the UK, and here they are. 48 00:03:26,960 --> 00:03:29,600 You'll certainly be familiar with some of them. 49 00:03:29,600 --> 00:03:32,600 How about this little chap down here? This is the weasel. 50 00:03:34,480 --> 00:03:39,480 They're ferocious little carnivores, armed with really sharp canine teeth, 51 00:03:39,480 --> 00:03:41,600 and this one is especially designed 52 00:03:41,600 --> 00:03:43,600 to dive down into mouse and vole holes, 53 00:03:43,600 --> 00:03:45,640 where they predate those species. 54 00:03:45,640 --> 00:03:47,880 It's slightly larger relative, the stoat, 55 00:03:47,880 --> 00:03:51,920 does a very similar thing, except that it is after rabbits. 56 00:03:56,600 --> 00:03:58,760 Over here, we have the polecat. 57 00:03:58,760 --> 00:04:00,880 Now these are very closely related to 58 00:04:00,880 --> 00:04:03,280 the domestic ferrets that people keep. 59 00:04:03,280 --> 00:04:06,880 And then, the most arboreal of all of the British mustelids - 60 00:04:06,880 --> 00:04:09,600 the fabulous and exquisite pine marten. 61 00:04:09,600 --> 00:04:13,160 Once a species you could find all over the UK, but these days 62 00:04:13,160 --> 00:04:17,320 sadly restricted to Scotland, although they are spreading out. 63 00:04:17,320 --> 00:04:19,760 Perhaps the most familiar of all of them, 64 00:04:19,760 --> 00:04:23,840 though, is this animal - the badger. And here you can see that, 65 00:04:23,840 --> 00:04:27,280 typical of this group of animals, it has five non-retractable claws 66 00:04:27,280 --> 00:04:32,400 on its front foot, because it's using those to dig its set. 67 00:04:32,400 --> 00:04:35,760 That just leaves us with the two semi-aquatic species, 68 00:04:35,760 --> 00:04:38,040 the mink and the otter. 69 00:04:38,040 --> 00:04:40,840 Now, the mink here is not a native of the UK, 70 00:04:40,840 --> 00:04:43,240 it was introduced from North America. 71 00:04:43,240 --> 00:04:45,160 In fact, it's made a bit of a pest of itself. 72 00:04:45,160 --> 00:04:47,680 But the otter is truly a native, 73 00:04:47,680 --> 00:04:51,000 and when it comes to identification, well, look, 74 00:04:51,000 --> 00:04:53,880 the mink is significantly smaller, so I think that 75 00:04:53,880 --> 00:04:57,360 if you get a good view of an animal swimming through the water, 76 00:04:57,360 --> 00:05:01,800 you shouldn't mistake anything in the UK for the fabulous otter. 77 00:05:04,280 --> 00:05:07,920 And most of us, when we think about otters, you probably imagine them in 78 00:05:07,920 --> 00:05:11,960 a river, but they don't just live in rivers, they also live by the coast. 79 00:05:11,960 --> 00:05:15,200 Some people think that the otters that live in saltwater 80 00:05:15,200 --> 00:05:17,240 and the otters that live in fresh water 81 00:05:17,240 --> 00:05:19,480 are two completely different species, 82 00:05:19,480 --> 00:05:22,840 but they're not, they're the same species, the Eurasian otter. 83 00:05:22,840 --> 00:05:26,800 And of all the 13 different species of otter that live in the world, 84 00:05:26,800 --> 00:05:29,640 the Eurasian otter has the widest distribution, 85 00:05:29,640 --> 00:05:32,480 and if I had a map, I could show you. 86 00:05:32,480 --> 00:05:35,480 Oh, blow me down! Good Lord, I do have a map! 87 00:05:35,480 --> 00:05:37,600 So, look, you can see, in the pink, 88 00:05:37,600 --> 00:05:40,800 that's where the Eurasian otter is distributed. 89 00:05:40,800 --> 00:05:44,240 So the otters are here, here's the heartland in Europe, 90 00:05:44,240 --> 00:05:48,520 but they go down south to Morocco, and all the way across here, 91 00:05:48,520 --> 00:05:52,600 across the Himalayas, down to Indonesia in the south, 92 00:05:52,600 --> 00:05:57,240 and now up here to Kamchatka Peninsula in the north. 93 00:05:57,240 --> 00:06:00,920 But for our otters, although they're all the same species, 94 00:06:00,920 --> 00:06:04,120 they do have two very different lifestyles. 95 00:06:05,680 --> 00:06:11,080 On rivers in the south, otters are almost entirely active at night, 96 00:06:11,080 --> 00:06:13,400 while the coastal otters of the north, 97 00:06:13,400 --> 00:06:17,560 who rely on the shifting tides to hunt, are out and about by day. 98 00:06:21,640 --> 00:06:24,480 One of the best places to see otters in the UK 99 00:06:24,480 --> 00:06:28,360 are the Shetland Islands off the north coast of Scotland. 100 00:06:28,360 --> 00:06:32,400 Here, the sea has battered the coastline over millions of years 101 00:06:32,400 --> 00:06:37,440 to create 3,000 kilometres of perfect otter habitat - 102 00:06:37,440 --> 00:06:39,920 a rocky coastline full of shallow pools, 103 00:06:39,920 --> 00:06:43,160 with plenty of sea caves to rest up in. 104 00:06:44,440 --> 00:06:47,640 So this is the ideal place for Simon King 105 00:06:47,640 --> 00:06:50,920 to give us his first guide to otter watching. 106 00:06:57,760 --> 00:07:00,640 So, Simon, when you're out trying to spot otters, 107 00:07:00,640 --> 00:07:03,080 what's the first thing you look for? 108 00:07:03,080 --> 00:07:04,320 Seagulls, obviously! 109 00:07:04,320 --> 00:07:06,480 There's a black-back, great black-back, 110 00:07:06,480 --> 00:07:09,640 and herring gulls, all scavenging birds, looking for an easy meal. 111 00:07:09,640 --> 00:07:12,360 If you see any of those three species sitting on a rock, 112 00:07:12,360 --> 00:07:14,040 looking down into the rocks, 113 00:07:14,040 --> 00:07:17,480 it means it's watching an otter that's already feeding, 114 00:07:17,480 --> 00:07:20,080 and then you can very carefully move yourself around 115 00:07:20,080 --> 00:07:22,160 to get a view of the otter. 116 00:07:24,200 --> 00:07:26,600 SEAGULL CAWS 117 00:07:31,160 --> 00:07:34,960 Following them really closely is all down to field-craft. 118 00:07:36,800 --> 00:07:39,640 If I'm to stand a chance of a very close view, 119 00:07:39,640 --> 00:07:41,480 I've got to make my way down the beach, 120 00:07:41,480 --> 00:07:47,320 and the only way I can do that is to move when the otter is underwater. 121 00:07:49,440 --> 00:07:50,960 On the surface... 122 00:07:53,840 --> 00:07:55,480 ..and down. OK. 123 00:07:55,480 --> 00:08:00,560 Otter dives rarely last much longer than 30 seconds, 124 00:08:00,560 --> 00:08:03,360 so I don't want to move... 125 00:08:03,360 --> 00:08:04,400 He's up. 126 00:08:07,480 --> 00:08:09,640 I won't move for much longer than 20 seconds. 127 00:08:11,600 --> 00:08:13,760 And down again. 128 00:08:15,160 --> 00:08:19,960 OK, I'm just going to tuck myself into the rocks. 129 00:08:21,480 --> 00:08:23,120 So it's absolutely vital that 130 00:08:23,120 --> 00:08:28,000 the wind is blowing from the otter towards me. 131 00:08:28,000 --> 00:08:32,000 That ensures that my scent doesn't reach the otter. 132 00:08:32,000 --> 00:08:35,360 OK, it's got a big fish. It's coming in towards me. 133 00:08:38,840 --> 00:08:40,320 Oh, that's beautiful! 134 00:08:43,800 --> 00:08:46,240 Just look at that. 135 00:08:47,640 --> 00:08:49,080 What a great view. 136 00:08:50,320 --> 00:08:52,680 No more than that. 137 00:08:58,320 --> 00:09:02,560 (I can't sit up.) 138 00:09:02,560 --> 00:09:04,520 (She's started to look in my direction.) 139 00:09:11,840 --> 00:09:15,760 To see an otter, like Simon, you've got to try and think like one. 140 00:09:18,240 --> 00:09:20,640 Whilst he was in Shetland, Simon got to know 141 00:09:20,640 --> 00:09:24,880 a couple of otter families, each living either side of a bay. 142 00:09:24,880 --> 00:09:27,680 There was Ebb, and her cub on one side, 143 00:09:27,680 --> 00:09:31,120 and Flow with two cubs on the other. 144 00:09:32,560 --> 00:09:36,440 Beautiful views. This is Flow, off to the right, that's the adult female. 145 00:09:36,440 --> 00:09:39,320 Her two cubs off to the left, 18 months old now. 146 00:09:39,320 --> 00:09:41,120 Pretty independent, those cubs, 147 00:09:41,120 --> 00:09:44,320 but they still depend on their mum for a certain amount of food, 148 00:09:44,320 --> 00:09:47,400 and, of course, an enormous amount of care and affection. 149 00:09:47,400 --> 00:09:50,120 They're a very, very close family unit, otters. 150 00:09:50,120 --> 00:09:52,280 Look at that, lovely serpentine grace, 151 00:09:52,280 --> 00:09:54,360 moving from land to sea as one, 152 00:09:54,360 --> 00:09:57,640 and otters that swim together, dive together. 153 00:09:57,640 --> 00:10:01,000 Look at this, one, two, three, all of them down, looking for food, 154 00:10:01,000 --> 00:10:03,400 we thought, but then within about a minute or two, 155 00:10:03,400 --> 00:10:06,320 the cubs were up on the surface having a complete barney. 156 00:10:06,320 --> 00:10:10,440 Now, this isn't a scrap, this is just hi-jinks, having a good time. 157 00:10:10,440 --> 00:10:13,760 But nothing being done with any serious aggression here. 158 00:10:13,760 --> 00:10:16,480 This is the sort of behaviour you might see when otters 159 00:10:16,480 --> 00:10:20,280 are courting, but right now this is just the youngsters playing together. 160 00:10:20,280 --> 00:10:23,320 And then, look at this, he loses his mate. "Where's he gone? 161 00:10:23,320 --> 00:10:25,960 "Where are you? Oh, there you are!" 162 00:10:25,960 --> 00:10:28,800 He thought the game was over, then it's all off again, 163 00:10:28,800 --> 00:10:31,240 they're just superb to watch. 164 00:10:31,240 --> 00:10:33,520 Absolutely magnificent. 165 00:10:33,520 --> 00:10:35,720 Oh, where is he gone? There you go. 166 00:10:35,720 --> 00:10:39,640 Quick bundle, and then no sooner did they disappear 167 00:10:39,640 --> 00:10:42,640 than one of them came up with a huge fish, a lumpsucker. 168 00:10:42,640 --> 00:10:44,280 They went back into feeding. 169 00:10:46,680 --> 00:10:48,320 And the game was over. 170 00:10:50,480 --> 00:10:52,400 Twice a day, these otter families 171 00:10:52,400 --> 00:10:54,600 have food delivered right to their door. 172 00:11:04,880 --> 00:11:09,640 A rising tide fills the shoreline with a seafood smorgasbord. 173 00:11:14,560 --> 00:11:17,040 Although their main diet is fish, 174 00:11:17,040 --> 00:11:19,800 in Scotland, otters are very partial to crabs. 175 00:11:23,440 --> 00:11:25,320 But whatever they are hunting, 176 00:11:25,320 --> 00:11:28,360 otters are spectacularly manoeuvrable underwater. 177 00:11:36,680 --> 00:11:40,320 How can an animal originally designed for life on the land 178 00:11:40,320 --> 00:11:43,840 be so good in water? Over to you, Chris. 179 00:11:49,480 --> 00:11:52,880 You've got to watch your fingers, but this is a fabulous place 180 00:11:52,880 --> 00:11:54,960 to appreciate just how well the otter 181 00:11:54,960 --> 00:11:57,400 is adapted to its aquatic environment. 182 00:11:57,400 --> 00:12:00,280 I'm at the British Wildlife Centre in Surrey, 183 00:12:00,280 --> 00:12:02,400 and these are obviously tame otters. 184 00:12:04,080 --> 00:12:07,040 They use their rear limbs, which are well webbed, 185 00:12:07,040 --> 00:12:11,440 to push that body through the water, and then they have that strong, 186 00:12:11,440 --> 00:12:14,040 stout tail, which they use as a rudder. 187 00:12:14,040 --> 00:12:18,000 The entire body is incredibly supple, it can twist and turn 188 00:12:18,000 --> 00:12:21,360 and bend, and when they're swimming as fast as they can, 189 00:12:21,360 --> 00:12:25,200 they undulate that body to improve their stroke, as it were. 190 00:12:26,960 --> 00:12:30,400 They want to be as streamlined as they possibly can, 191 00:12:30,400 --> 00:12:33,480 and, as you can see, they've achieved that 192 00:12:33,480 --> 00:12:37,600 with a long, lithe, slim body. 193 00:12:42,760 --> 00:12:45,960 Honestly, beautiful. 194 00:12:45,960 --> 00:12:48,400 You know, when I was a kid, I was obsessed with otters. 195 00:12:48,400 --> 00:12:51,440 I was so obsessed that my mother made a fake fur otter. 196 00:12:51,440 --> 00:12:54,880 It was a terrible representation of this beautiful animal, 197 00:12:54,880 --> 00:12:58,520 but I would wind it up at the foot of the bed and shine a torch on it 198 00:12:58,520 --> 00:13:00,880 and squint to make it look real. 199 00:13:00,880 --> 00:13:04,040 If this had happened to me when I was eight, I'd have burst. 200 00:13:04,040 --> 00:13:06,440 I'd have burst spontaneously. 201 00:13:07,840 --> 00:13:11,720 Aw, a childhood dream fulfilled. 202 00:13:11,720 --> 00:13:15,360 But come on, Chris, focus. Back to the engineering. 203 00:13:18,240 --> 00:13:21,440 To really understand how an animal works physically, 204 00:13:21,440 --> 00:13:23,360 we need to look inside it. 205 00:13:23,360 --> 00:13:25,760 We've got a fabulous opportunity to do that here, 206 00:13:25,760 --> 00:13:28,560 with this articulated otter skeleton. 207 00:13:28,560 --> 00:13:31,800 If we consider the vertebral column here, 208 00:13:31,800 --> 00:13:37,520 it's got all of these flanges, and those are muscle attachment points. 209 00:13:37,520 --> 00:13:40,040 Now, the bigger and broader they are, 210 00:13:40,040 --> 00:13:42,800 the larger the muscle is that's attached to them. 211 00:13:42,800 --> 00:13:44,680 So I can tell you, for instance, 212 00:13:44,680 --> 00:13:46,880 that there was a lot of muscle tissue there, 213 00:13:46,880 --> 00:13:51,160 and, therefore, this is a very supple and sinuous animal. 214 00:13:51,160 --> 00:13:53,880 And let's look at the feet, because, on land, 215 00:13:53,880 --> 00:13:57,240 this animal is walking on the soles of its feet, just like we do, 216 00:13:57,240 --> 00:14:00,120 and that tells me that it's not fast-moving, 217 00:14:00,120 --> 00:14:03,760 because, typically, animals which are fast-moving run on their toes. 218 00:14:03,760 --> 00:14:06,920 Think of cats and dogs, and horses, of course. 219 00:14:06,920 --> 00:14:09,720 But, of course, here, it doesn't need to be fast-moving on land, 220 00:14:09,720 --> 00:14:12,880 what it wants is broad feet, which are webbed, as you know, 221 00:14:12,880 --> 00:14:17,600 because these are used for pushing the animal through the water. 222 00:14:17,600 --> 00:14:21,320 So what we've got here is an animal that's supremely adapted 223 00:14:21,320 --> 00:14:23,240 for an aquatic lifestyle. 224 00:14:25,880 --> 00:14:29,120 There's no better way to see this than when, 225 00:14:29,120 --> 00:14:32,000 on a calm day in Shetland, Simon found an otter 226 00:14:32,000 --> 00:14:35,200 swimming in gin-clear water. 227 00:14:35,200 --> 00:14:39,320 It's really unusual to find a steep drop-off like this, with water 228 00:14:39,320 --> 00:14:42,960 directly beneath that's shallow enough to attract an otter to feed. 229 00:14:42,960 --> 00:14:46,640 And it's one thing to watch these animals on the surface, but look! 230 00:14:49,000 --> 00:14:51,800 I have to say, this really is the clearest view 231 00:14:51,800 --> 00:14:54,480 I have ever had of an otter hunting like this, 232 00:14:54,480 --> 00:14:58,440 and it's immediately clear that it's not chasing fish directly, 233 00:14:58,440 --> 00:15:01,240 or not at first, but instead... Ooh, there you go. 234 00:15:01,240 --> 00:15:04,240 ..charging after fish that it disturbs from under rocks 235 00:15:04,240 --> 00:15:05,600 and through the seaweed. 236 00:15:05,600 --> 00:15:10,280 It spends most of its time foraging through that weed in the dense, 237 00:15:10,280 --> 00:15:12,560 dense bladderwrack and kelp. 238 00:15:14,640 --> 00:15:18,280 Little bit of a breather. Again, you never get to see their feet 239 00:15:18,280 --> 00:15:20,240 when they're on the water surface like this, 240 00:15:20,240 --> 00:15:23,560 but you can just see, she's so at home, perfectly relaxed. 241 00:15:23,560 --> 00:15:24,560 What a great view. 242 00:15:26,760 --> 00:15:31,040 Now, Simon King is clearly a confirmed otterholic. 243 00:15:31,040 --> 00:15:34,640 But there's one other cameraman who's always trying to get 244 00:15:34,640 --> 00:15:36,960 even closer than Simon. 245 00:15:36,960 --> 00:15:40,000 That is my good friend, Charlie Hamilton James. 246 00:15:41,800 --> 00:15:46,240 I saw my first otter when I was 16, 247 00:15:46,240 --> 00:15:49,560 and I'd gone to Shetland just to see otters. 248 00:15:55,040 --> 00:15:56,880 Luckily, I've had lots of cups of tea, 249 00:15:56,880 --> 00:15:59,520 so I'll be able to keep myself warm. 250 00:15:59,520 --> 00:16:01,600 I think that's too cold down there. 251 00:16:01,600 --> 00:16:04,400 The otters won't hang around long, 252 00:16:04,400 --> 00:16:07,040 so I need to get on with the serious business of being 253 00:16:07,040 --> 00:16:11,360 one of the only people ever to have swum with a truly wild otter. 254 00:16:15,760 --> 00:16:18,520 Usually they're incredibly wary. 255 00:16:18,520 --> 00:16:21,640 The slightest smell of a human and they're gone. 256 00:16:21,640 --> 00:16:24,080 But in the water, my scent is hidden, 257 00:16:24,080 --> 00:16:27,240 and whilst they know I'm here, they don't know what I am. 258 00:16:34,280 --> 00:16:36,280 I can see an otter working the shore, 259 00:16:36,280 --> 00:16:38,280 and I'm swimming gently towards it. 260 00:16:43,000 --> 00:16:46,640 And then suddenly, it appears. 261 00:16:46,640 --> 00:16:48,640 My first shot of an otter underwater. 262 00:16:50,480 --> 00:16:52,720 It's incredible how close I'm getting, 263 00:16:52,720 --> 00:16:56,560 and although inquisitive, it's still carrying on hunting and fishing. 264 00:17:09,960 --> 00:17:11,400 As it swims through the water, 265 00:17:11,400 --> 00:17:14,480 I can see for the first time how otters use their whole bodies 266 00:17:14,480 --> 00:17:17,760 to propel themselves along, not just their tails and feet. 267 00:17:21,200 --> 00:17:24,360 It's quite simply breathtaking to watch, 268 00:17:24,360 --> 00:17:29,720 and I feel it can't get any better. But it does. 269 00:17:35,200 --> 00:17:38,960 This bold and brazen dog otter is swimming up to investigate, 270 00:17:38,960 --> 00:17:41,720 coming so close he touches my camera. 271 00:17:41,720 --> 00:17:44,720 It really is a once-in-a-lifetime experience. 272 00:17:44,720 --> 00:17:47,560 GARBLES EXCITEDLY 273 00:17:57,720 --> 00:18:00,600 That is, without a doubt, 274 00:18:00,600 --> 00:18:04,840 the best wildlife encounter I have ever had in my life, by a mile. 275 00:18:04,840 --> 00:18:06,040 It is unbelievable. 276 00:18:08,000 --> 00:18:12,320 Now, like Charlie and Simon, I've spent some time in Shetland. 277 00:18:12,320 --> 00:18:15,080 DRAMATIC MUSIC 278 00:18:15,080 --> 00:18:18,720 And it's not always sunny and serene. 279 00:18:26,360 --> 00:18:28,120 The thing is, though, 280 00:18:28,120 --> 00:18:30,640 no self-respecting mother otter 281 00:18:30,640 --> 00:18:35,080 is going to take her cubs out in that! HE LAUGHS 282 00:18:35,080 --> 00:18:38,120 It takes a lot to stop an otter. 283 00:18:38,120 --> 00:18:40,200 This mother and her cub are out fishing. 284 00:18:40,200 --> 00:18:43,880 Even in gale force winds, they have to eat every day. 285 00:18:43,880 --> 00:18:46,920 If they don't, they'll starve. 286 00:18:46,920 --> 00:18:49,800 And surviving in these chilly North Sea waters 287 00:18:49,800 --> 00:18:52,440 requires some high-performance equipment. 288 00:18:54,000 --> 00:18:59,160 The otter's fur is short, fine, dense and velvety, 289 00:18:59,160 --> 00:19:03,360 and it's also extremely good at doing two essential things - 290 00:19:03,360 --> 00:19:06,800 keeping it dry and keeping it warm. 291 00:19:06,800 --> 00:19:10,440 Let's take a closer look at the fur using this microscope. 292 00:19:10,440 --> 00:19:13,280 I'll just focus it. 293 00:19:13,280 --> 00:19:18,360 You can see that the coarse hairs there are what we call 294 00:19:18,360 --> 00:19:23,440 the guard hairs. They're about 20 millimetres long, and they're covered 295 00:19:23,440 --> 00:19:28,680 with a water-repellent oil, and it's these that keep the otter dry. 296 00:19:28,680 --> 00:19:30,760 But if I part them 297 00:19:30,760 --> 00:19:33,240 and we delve underneath into the under-fur, 298 00:19:33,240 --> 00:19:37,920 these hairs are shorter, between 10 and 15 millimetres, 299 00:19:37,920 --> 00:19:40,680 and they occur at an incredible density - 300 00:19:40,680 --> 00:19:45,280 60,000 hairs per square centimetre 301 00:19:45,280 --> 00:19:47,840 all over this otter's body, 302 00:19:47,840 --> 00:19:50,680 and they are really good at keeping it warm, 303 00:19:50,680 --> 00:19:53,520 because they trap a layer of air here 304 00:19:53,520 --> 00:19:58,400 at a temperature ten degrees higher than the surrounding air or water. 305 00:19:58,400 --> 00:20:01,960 And when it comes to staying warm in water, you've got to try hard, 306 00:20:01,960 --> 00:20:06,560 because we lose temperature 27 times quicker through water 307 00:20:06,560 --> 00:20:08,360 than we do through air. 308 00:20:08,360 --> 00:20:13,000 Now, if you've got a coat like that, you certainly need to look after it. 309 00:20:13,000 --> 00:20:16,960 And one thing you'll notice is otters spend a lot of time grooming, 310 00:20:16,960 --> 00:20:20,160 particularly if they've been into saltwater, 311 00:20:20,160 --> 00:20:23,760 because the salt leads to the breakdown of that oil 312 00:20:23,760 --> 00:20:26,240 which is keeping the animal dry. 313 00:20:26,240 --> 00:20:29,880 So they'll come onto land, actively look for freshwater to bath in, 314 00:20:29,880 --> 00:20:34,320 and then spend a lot of time grooming, often in traditional spots. 315 00:20:34,320 --> 00:20:37,800 At the end of the day, if you've got a coat like this, 316 00:20:37,800 --> 00:20:40,440 you want to keep it in tiptop condition 317 00:20:40,440 --> 00:20:42,720 so you're nice and dry and warm. 318 00:20:42,720 --> 00:20:46,920 HE SHIVERS I could do with a bit of extra under-fur myself, it's bitter. 319 00:20:46,920 --> 00:20:49,560 Now, we've seen otters frolicking about 320 00:20:49,560 --> 00:20:52,360 in broad daylight on the coast. 321 00:20:52,360 --> 00:20:55,520 I don't know about you, but when I think about where an otter lives, 322 00:20:55,520 --> 00:21:01,120 I tend to think about something like this - a river, freshwater. 323 00:21:08,160 --> 00:21:11,520 In southern Britain, otters live not just on rivers, 324 00:21:11,520 --> 00:21:15,560 but in lakes and marshes too - anywhere, in fact, 325 00:21:15,560 --> 00:21:19,640 where there's water and plenty of bushes for cover. 326 00:21:19,640 --> 00:21:22,680 Here it's much harder to follow their lives, 327 00:21:22,680 --> 00:21:25,880 because on a river, otters come out at night. 328 00:21:28,520 --> 00:21:32,360 There's no twice-daily tide bringing food, 329 00:21:32,360 --> 00:21:34,960 but with dusk, the river comes alive. 330 00:21:36,520 --> 00:21:41,280 Away from prying eyes, fish like bullheads and eels emerge. 331 00:21:44,960 --> 00:21:49,360 And under the cover of darkness, otters come out to hunt them. 332 00:21:59,880 --> 00:22:02,440 As the otters emerge, so does Charlie, 333 00:22:02,440 --> 00:22:04,680 hoping to share their lives. 334 00:22:09,720 --> 00:22:13,760 He's spent more time than anyone filming their movements at night. 335 00:22:19,400 --> 00:22:22,400 Tonight he's using a thermal imaging camera, 336 00:22:22,400 --> 00:22:24,880 which works by detecting heat, 337 00:22:24,880 --> 00:22:27,560 and shows up any warm-blooded creature on the river. 338 00:22:29,320 --> 00:22:34,000 I've got the ducks on it. They're coming down the river, 339 00:22:34,000 --> 00:22:39,040 and the ducks... are right up against the edge. 340 00:22:41,520 --> 00:22:45,400 Ah, it's really hard to see it. There's the otter. 341 00:22:45,400 --> 00:22:50,800 I've got the otter, it's right near the ducks. They can't see it. 342 00:22:50,800 --> 00:22:53,280 I can only just see the ducks. 343 00:22:53,280 --> 00:22:55,920 Yeah, he's right next to the ducks. 344 00:22:55,920 --> 00:22:58,720 There goes the ducks. Oh... 345 00:22:58,720 --> 00:23:01,400 HE CHUCKLES 346 00:23:05,600 --> 00:23:11,560 There's something very special about seeing an otter at night like this. 347 00:23:11,560 --> 00:23:13,960 And I guess it's because you're seeing something 348 00:23:13,960 --> 00:23:16,920 that you shouldn't really be seeing. 349 00:23:22,560 --> 00:23:26,320 From all the hours he's spent watching them at night, 350 00:23:26,320 --> 00:23:30,240 Charlie's noticed the otters are constantly alert. 351 00:23:30,240 --> 00:23:31,480 They're hyper-sensitive 352 00:23:31,480 --> 00:23:34,040 to everything that's going on around them. 353 00:23:35,720 --> 00:23:38,160 OTTER SQUEAKS 354 00:23:41,400 --> 00:23:46,320 The family cruise the river like a well-oiled hunting machine, 355 00:23:46,320 --> 00:23:47,920 diving after fish, 356 00:23:47,920 --> 00:23:51,520 rooting around rocks to dislodge crabs and crayfish. 357 00:24:03,720 --> 00:24:08,680 Now and again they rest up in special places - their holts - 358 00:24:08,680 --> 00:24:13,000 hidden behind bushes or perhaps beneath a tangle of tree roots. 359 00:24:13,000 --> 00:24:16,300 This pattern of resting and hunting, resting and hunting, 360 00:24:16,300 --> 00:24:20,240 is how they pass the night. 361 00:24:23,880 --> 00:24:27,080 But I wonder if you, like me, 362 00:24:27,080 --> 00:24:30,880 have ever wondered how on earth otters find food 363 00:24:30,880 --> 00:24:34,160 in this murky, pitch-black water? 364 00:24:34,160 --> 00:24:37,080 One of the ways the otter is going to be finding its food 365 00:24:37,080 --> 00:24:39,800 is by using its whiskers - 366 00:24:39,800 --> 00:24:43,720 these highly modified hairs we call virissae. 367 00:24:43,720 --> 00:24:46,640 And they are extraordinarily sensitive. 368 00:24:46,640 --> 00:24:49,400 Well, not the hair itself - that's dead - 369 00:24:49,400 --> 00:24:54,120 but it's the tissue into which it's rooted that is absolutely packed 370 00:24:54,120 --> 00:24:59,120 full of neurons, nervous tissue, and this transmits the information 371 00:24:59,120 --> 00:25:01,160 to the animal's brain, and in otters, 372 00:25:01,160 --> 00:25:04,200 that part of the brain is significantly larger 373 00:25:04,200 --> 00:25:08,680 than in other species that are not so reliant on their whiskers. 374 00:25:08,680 --> 00:25:12,240 But, you know, it's not that the whiskers actually have to touch 375 00:25:12,240 --> 00:25:15,600 their prey, or anything they're looking for, 376 00:25:15,600 --> 00:25:18,040 because they are sufficiently sensitive 377 00:25:18,040 --> 00:25:20,080 to be able to detect the vortices. 378 00:25:20,080 --> 00:25:23,320 Now, that the churned up water that fish have left behind them 379 00:25:23,320 --> 00:25:25,880 when they're swimming through the river. 380 00:25:25,880 --> 00:25:29,840 And what's even more astonishing is that these animals 381 00:25:29,840 --> 00:25:34,440 can actually detect which species of fish has been swimming there, 382 00:25:34,440 --> 00:25:37,080 even when the fish is long gone. 383 00:25:37,080 --> 00:25:38,520 That's remarkable. 384 00:25:41,960 --> 00:25:44,400 That's an astonishing bit of biology, 385 00:25:44,400 --> 00:25:46,280 but when it comes to hunting, 386 00:25:46,280 --> 00:25:50,520 it seems that otters may have an even cleverer trick up their sleeve. 387 00:25:50,520 --> 00:25:54,240 Now, after hours and hours of patient observation, 388 00:25:54,240 --> 00:25:57,440 Charlie Hamilton James thinks he's discovered something 389 00:25:57,440 --> 00:25:59,440 completely unexpected. 390 00:26:02,120 --> 00:26:04,440 So, Charlie, I'm imagining I'm an otter, 391 00:26:04,440 --> 00:26:08,400 I'm swimming around at night, in possibly murky water, 392 00:26:08,400 --> 00:26:10,360 that's a tall order. 393 00:26:10,360 --> 00:26:13,880 Now, apart from using... sensing movement of fish, 394 00:26:13,880 --> 00:26:17,160 what other senses could I use to hunt? 395 00:26:17,160 --> 00:26:21,240 I've got this theory that otters also use smell underwater. 396 00:26:21,240 --> 00:26:24,040 Yeah, but they are mammals like us, so we have to go... 397 00:26:24,040 --> 00:26:27,760 HE SNIFFS ..and they're holding their breath. 398 00:26:27,760 --> 00:26:30,560 So how on earth can an otter smell underwater? 399 00:26:30,560 --> 00:26:33,600 Well, otters, they're supposed to have their nostrils 400 00:26:33,600 --> 00:26:35,800 completely closed underwater, 401 00:26:35,800 --> 00:26:38,480 but I used to feed the otter in my garden, 402 00:26:38,480 --> 00:26:41,160 because I was rehabilitating one to release him, 403 00:26:41,160 --> 00:26:43,960 and I used to put her fish in the river, 404 00:26:43,960 --> 00:26:45,720 so that the rats didn't get it. 405 00:26:47,480 --> 00:26:50,440 And she could find it. Wherever I put it, she could always find it. 406 00:26:50,440 --> 00:26:53,240 So I was always thinking, "How can she find it?" 407 00:26:53,240 --> 00:26:55,720 It's not moving at all. No, so the whiskers thing, 408 00:26:55,720 --> 00:26:57,160 that's not doing anything. 409 00:26:57,160 --> 00:27:00,200 It's dark, and the river's all murky, so she can't see it, 410 00:27:00,200 --> 00:27:02,560 so it's got to be something else going on. 411 00:27:02,560 --> 00:27:06,080 OK. So, I thought, "Well, I'd better try and film it." 412 00:27:06,080 --> 00:27:09,080 I invented some kit. It's an underwater camera. 413 00:27:09,080 --> 00:27:11,640 And I also put a nappy in it, because it leaked. 414 00:27:11,640 --> 00:27:13,160 THEY LAUGH 415 00:27:13,160 --> 00:27:14,840 And then I put it in the river, 416 00:27:14,840 --> 00:27:17,680 and I put a couple of infrared lights on it 417 00:27:17,680 --> 00:27:20,960 to light it up. So it's still pitch dark. 418 00:27:20,960 --> 00:27:22,960 I tied a dead fish to a brick, 419 00:27:22,960 --> 00:27:25,440 I stuck it in the murky river at night, 420 00:27:25,440 --> 00:27:27,720 and it found it straightaway. 421 00:27:27,720 --> 00:27:29,880 How? Can we see it? Yeah, have a look. 422 00:27:32,120 --> 00:27:34,000 Here's the dead fish? Yeah. 423 00:27:34,000 --> 00:27:38,560 And it's very quick, look, the otter comes in, picks it up, it's gone. 424 00:27:38,560 --> 00:27:42,240 Now, how does that tell us that it's smelling the fish? 425 00:27:42,240 --> 00:27:45,920 Right, well, at first, I didn't know anything else was going on, 426 00:27:45,920 --> 00:27:47,320 other than it had found it. 427 00:27:47,320 --> 00:27:49,400 So I had to go back, and look at this thing 428 00:27:49,400 --> 00:27:52,400 and look at this thing, and try and work out what was going on, 429 00:27:52,400 --> 00:27:56,680 and this is what I noticed. If you play it back really slowly... 430 00:27:56,680 --> 00:27:58,480 There. There's a little bubble. 431 00:27:58,480 --> 00:28:02,160 I thought that was just its nostril, but just that little flash there...? 432 00:28:02,160 --> 00:28:04,280 A little flash, it's putting a bubble out, 433 00:28:04,280 --> 00:28:06,280 and it's sniffing that bubble back in. 434 00:28:06,280 --> 00:28:12,120 And that's going to get loaded with scent and the chemicals of the fish. 435 00:28:12,120 --> 00:28:15,720 And then once it's worked out what it is, pick it up, swim off with it. 436 00:28:15,720 --> 00:28:19,440 It actually exudes a bubble of air, 437 00:28:19,440 --> 00:28:23,480 that somehow captures the scent, and it sucks it back into its nose. 438 00:28:23,480 --> 00:28:25,920 Absolutely. Did you just come up with that? 439 00:28:25,920 --> 00:28:28,760 Is that just the Charlie theory from nowhere? 440 00:28:28,760 --> 00:28:31,680 No, it's not. You know, I knew something was going on 441 00:28:31,680 --> 00:28:35,240 because I knew they could find them, and then I'd seen a BBC documentary, 442 00:28:35,240 --> 00:28:38,720 and in it they featured star-nosed moles - 443 00:28:38,720 --> 00:28:42,640 these very cool critters that hunt underwater. 444 00:28:42,640 --> 00:28:45,920 And what they'd done is they'd basically filmed them 445 00:28:45,920 --> 00:28:48,720 in very slow motion and proved that they are smelling 446 00:28:48,720 --> 00:28:51,080 by putting out bubbles and sniffing them back in again. 447 00:28:51,080 --> 00:28:53,800 The scent is in the water? Yeah. 448 00:28:53,800 --> 00:28:56,920 But I put cameras above the water. 449 00:28:56,920 --> 00:28:59,440 I wanted to look down on, to see exactly what was happening, 450 00:28:59,440 --> 00:29:02,840 so not just underwater. And you can see, she comes up the river, 451 00:29:02,840 --> 00:29:04,960 and she goes past the fish, 452 00:29:04,960 --> 00:29:08,440 and then she suddenly makes a very sharp turn, and grabs it. 453 00:29:08,440 --> 00:29:11,240 So she clocked it. Somehow she's detected it. 454 00:29:11,240 --> 00:29:14,800 And a bit like the wind, the river's going in one direction, 455 00:29:14,800 --> 00:29:17,720 so any scent's coming down the river, and when she went past it, 456 00:29:17,720 --> 00:29:20,400 she obviously clocked it, and came back round and grabbed it. 457 00:29:20,400 --> 00:29:25,040 So whatever it is, she clearly can do it. She is picking up that scent. 458 00:29:25,040 --> 00:29:29,280 And it looks like she's using the Charlie bubble scenting theory. 459 00:29:29,280 --> 00:29:32,440 I think that's probably what they'll call it from now on! 460 00:29:32,440 --> 00:29:34,440 Science in action, folks. 461 00:29:36,160 --> 00:29:39,440 Now we know otters are supreme swimmers, 462 00:29:39,440 --> 00:29:43,880 they have a highly sophisticated sense of both touch and smell, 463 00:29:43,880 --> 00:29:49,200 all of which combines to make them very, very good at catching fish. 464 00:29:49,200 --> 00:29:52,080 And that skill would inevitably bring them 465 00:29:52,080 --> 00:29:54,880 into conflict with humans. 466 00:29:54,880 --> 00:29:59,720 For hundreds of years, in Britain, otters have been hunted. 467 00:30:04,120 --> 00:30:07,240 Organised hunting of otters was going on 468 00:30:07,240 --> 00:30:11,840 way back in the 12th century, partially to control their numbers. 469 00:30:11,840 --> 00:30:16,680 But by the 20th century, otters were being hunted purely for sport. 470 00:30:18,760 --> 00:30:22,320 Someone who used to hunt them was James Williams, 471 00:30:22,320 --> 00:30:25,320 now one of the foremost otter experts in the country. 472 00:30:26,720 --> 00:30:28,920 What was the structure of the hunt? 473 00:30:28,920 --> 00:30:31,840 Well, I've got a picture here of my father, 474 00:30:31,840 --> 00:30:33,760 who was the master of the hunt. 475 00:30:33,760 --> 00:30:37,520 And there he is with some of the officials and the hounds... 476 00:30:37,520 --> 00:30:41,160 Great photo. ..and he organised where the hunt would go 477 00:30:41,160 --> 00:30:44,640 and then they would meet at 10 o'clock or 10.30 478 00:30:44,640 --> 00:30:48,880 at a bridge or a house and set off to try and find an otter 479 00:30:48,880 --> 00:30:50,960 and see if they could have a hunt. 480 00:30:50,960 --> 00:30:55,680 I've got to say, you've got the most wonderful collection of dogs in this, haven't you? 481 00:30:55,680 --> 00:30:57,640 They're purebred otter hounds. Oh, are they? 482 00:30:57,640 --> 00:31:00,520 These are purebred otter hounds? Yes, purebred otter hounds. 483 00:31:00,520 --> 00:31:02,720 Here's some more and you can see there 484 00:31:02,720 --> 00:31:05,440 what fine, upstanding animals they are. 485 00:31:05,440 --> 00:31:08,440 They're wonderful, wonderful hounds and I love them. 486 00:31:08,440 --> 00:31:11,720 And everyone's on foot. Am I right? It's all... Yes. 487 00:31:11,720 --> 00:31:15,360 No horses or anything like that. No, no horses. All on foot. All on foot. 488 00:31:15,360 --> 00:31:18,720 And long poles which people sometimes say they were spears, they're not, 489 00:31:18,720 --> 00:31:21,840 they're just walking sticks because you've got to cross the river. 490 00:31:21,840 --> 00:31:25,400 Now, with a fox hunt, the fox will be in a bush or a... 491 00:31:25,400 --> 00:31:28,920 But an otter's going to be a much harder quarry, I would think, 492 00:31:28,920 --> 00:31:30,400 to find in the first place. 493 00:31:30,400 --> 00:31:32,600 Because there are far fewer of them, 494 00:31:32,600 --> 00:31:36,640 the first thing you have to do is find where the actual otter 495 00:31:36,640 --> 00:31:40,200 has gone in the night and follow its scent, which we call the drag, 496 00:31:40,200 --> 00:31:42,560 and hope that eventually you would locate the otter. 497 00:31:42,560 --> 00:31:45,440 How many separate otter hunts would there have been 498 00:31:45,440 --> 00:31:47,840 up and down the country? 499 00:31:47,840 --> 00:31:51,480 About two dozen. Most places were in the territory of an otter hunt. 500 00:31:51,480 --> 00:31:55,400 What sort of effect did the hunting back in those days 501 00:31:55,400 --> 00:31:56,920 have on otter numbers overall? 502 00:31:56,920 --> 00:31:58,200 Very little effect. 503 00:31:58,200 --> 00:32:02,440 We know that otter hunting was going in the reign of King John 504 00:32:02,440 --> 00:32:04,680 and otters survived perfectly well. 505 00:32:04,680 --> 00:32:07,120 I think the hunts were fairly beneficial 506 00:32:07,120 --> 00:32:10,160 in that they stopped people trapping, because it was much more fun 507 00:32:10,160 --> 00:32:12,480 to see if you could have a hunt and a day with your friends 508 00:32:12,480 --> 00:32:15,440 than to set a trap and go in the morning and find a mangled corpse, 509 00:32:15,440 --> 00:32:19,680 so I think the hunt, in fact, had a slightly protective effect. 510 00:32:23,480 --> 00:32:27,840 But for all that, between the 1950s and the 1970s, 511 00:32:27,840 --> 00:32:31,560 there was a sudden and dramatic decline in otters. 512 00:32:32,960 --> 00:32:35,840 The hunts were the first to notice there was a problem 513 00:32:35,840 --> 00:32:39,160 and they immediately sounded the alarm. 514 00:32:39,160 --> 00:32:41,880 But the numbers of otters continued to fall, 515 00:32:41,880 --> 00:32:45,280 and in 1978, otter hunting was made illegal. 516 00:32:48,520 --> 00:32:52,600 Something was devastating the population 517 00:32:52,600 --> 00:32:55,240 and, finally, after lengthy investigation, 518 00:32:55,240 --> 00:32:56,840 the cause was discovered. 519 00:33:01,280 --> 00:33:04,400 Toxic chemicals, introduced in the 1950s, 520 00:33:04,400 --> 00:33:07,520 were being used by farmers to kill pests 521 00:33:07,520 --> 00:33:10,160 and prevent fungal infestations. 522 00:33:10,160 --> 00:33:12,320 The poisons were washing into waterways 523 00:33:12,320 --> 00:33:14,760 and building up through the food chain. 524 00:33:18,160 --> 00:33:20,640 Otters are a top predator in our rivers 525 00:33:20,640 --> 00:33:25,320 so the toxins accumulated in their bodies to dangerous levels, 526 00:33:25,320 --> 00:33:27,720 causing blindness and fertility problems. 527 00:33:31,280 --> 00:33:33,920 By the early 1980s, otter numbers had crashed 528 00:33:33,920 --> 00:33:36,680 by up to 90% in England - 529 00:33:36,680 --> 00:33:39,280 they were on the brink of extinction. 530 00:33:40,760 --> 00:33:45,440 But a fictional tale about the life of an otter in North Devon, 531 00:33:45,440 --> 00:33:47,760 written at the peak of the hunting period, 532 00:33:47,760 --> 00:33:51,120 had begun to change people's attitudes. 533 00:33:51,120 --> 00:33:54,960 It was Henry Williamson's Tarka The Otter. 534 00:33:56,320 --> 00:33:58,440 Oh, this is Tarka when a child. 535 00:33:58,440 --> 00:34:01,480 "The eldest and biggest of the litter was a dog cub 536 00:34:01,480 --> 00:34:05,120 "and when he drew his first breath he was less than five inches long 537 00:34:05,120 --> 00:34:08,760 "from his nose to where his wee tail joined his backbone." 538 00:34:08,760 --> 00:34:10,440 That's a bit twee, isn't it? 539 00:34:10,440 --> 00:34:13,160 "His fur was soft and grey as the buds of the willow 540 00:34:13,160 --> 00:34:14,880 "before they opened Easter tide." 541 00:34:14,880 --> 00:34:16,320 That's all right. 542 00:34:16,320 --> 00:34:19,600 "He was called Tarka, which was a name given to otters..." 543 00:34:19,600 --> 00:34:24,240 "..many years ago by men dwelling in hut circles on the moor. 544 00:34:24,240 --> 00:34:28,280 "It means "little wanderer" or "wandering as water"." 545 00:34:29,320 --> 00:34:31,360 Now, I read Tarka as a child 546 00:34:31,360 --> 00:34:36,800 and it's a mixture of poetry and raw, almost brutal, reality. 547 00:34:36,800 --> 00:34:39,080 And Williamson was a realist. 548 00:34:39,080 --> 00:34:42,160 He even joined to his local otter hunt to make sure 549 00:34:42,160 --> 00:34:45,760 the book was as accurate as it possibly could be. 550 00:34:45,760 --> 00:34:49,520 But when he wrote Tarka The Otter 85 years ago, 551 00:34:49,520 --> 00:34:51,440 otters were still plentiful. 552 00:34:51,440 --> 00:34:54,800 The great crash in their numbers hadn't actually started. 553 00:34:54,800 --> 00:34:58,760 So this isn't really a book about otter conservation, 554 00:34:58,760 --> 00:35:02,360 but it did start to change the way that we think about otters. 555 00:35:02,360 --> 00:35:06,480 And that change continued with the publication of this book, 556 00:35:06,480 --> 00:35:10,840 Ring Of Bright Water by Gavin Maxwell, in 1960. 557 00:35:10,840 --> 00:35:13,400 And this book, and the film of the book, 558 00:35:13,400 --> 00:35:16,640 cemented a change that was already happening, 559 00:35:16,640 --> 00:35:21,520 turning the otter from vermin into a treasured part of British wildlife. 560 00:35:25,320 --> 00:35:27,640 Otters had had a make-over. 561 00:35:27,640 --> 00:35:30,040 Now they were playful and friendly 562 00:35:30,040 --> 00:35:32,640 and there was an outpouring of support for them. 563 00:35:34,120 --> 00:35:36,880 Otter conservation hit the political agenda 564 00:35:36,880 --> 00:35:39,360 and they finally became legally protected 565 00:35:39,360 --> 00:35:42,000 in England and Wales in 1978 566 00:35:42,000 --> 00:35:44,240 and just a few years later in Scotland. 567 00:35:50,160 --> 00:35:53,000 Where are you? Come on. 568 00:35:53,000 --> 00:35:56,400 Meanwhile, new conservation groups had sprung up 569 00:35:56,400 --> 00:35:58,920 and one of these was the Otter Trust, 570 00:35:58,920 --> 00:36:02,760 set up in 1972 by Philip and Jeanne Wayre. 571 00:36:04,720 --> 00:36:08,240 They were so passionate about otters they bought a farm in Suffolk 572 00:36:08,240 --> 00:36:11,160 and created large breeding enclosures by a lake. 573 00:36:13,120 --> 00:36:15,880 Rescued otters were taken in and bred in captivity 574 00:36:15,880 --> 00:36:20,360 and in 1983 the first three otters - two females and a male - 575 00:36:20,360 --> 00:36:22,440 were released into a river in Suffolk, 576 00:36:22,440 --> 00:36:25,480 where it was hoped they would start a wild population. 577 00:36:29,520 --> 00:36:32,400 So the otters took a massive hit, 578 00:36:32,400 --> 00:36:35,520 but then the chemical pollutants were banned. 579 00:36:35,520 --> 00:36:37,520 The otters got legal protection 580 00:36:37,520 --> 00:36:40,360 and a lucky few even got a helping hand directly. 581 00:36:41,760 --> 00:36:46,360 We had paved the way for their recovery - now it was up to them. 582 00:36:49,640 --> 00:36:51,800 Good news for the otter's recovery 583 00:36:51,800 --> 00:36:54,000 is that it can breed at any time of year 584 00:36:54,000 --> 00:36:57,240 and produce a litter of two or occasionally three cubs. 585 00:36:59,800 --> 00:37:02,440 The den might be an old rabbit burrow 586 00:37:02,440 --> 00:37:04,920 or a hole in a tangle of tree roots. 587 00:37:04,920 --> 00:37:07,280 It just needs to be snug and secluded. 588 00:37:08,800 --> 00:37:10,680 OTTERS SQUEAK 589 00:37:10,680 --> 00:37:12,640 The cubs grow quite fast, 590 00:37:12,640 --> 00:37:16,640 playing and sparring with each other to build up their strength. 591 00:37:22,600 --> 00:37:25,200 It's not until they're about four months old 592 00:37:25,200 --> 00:37:28,200 that they first venture, tentatively, out into the water. 593 00:37:30,480 --> 00:37:34,040 The family call to each other with piercing whistles 594 00:37:34,040 --> 00:37:36,160 to stick close together in the dark. 595 00:37:39,840 --> 00:37:42,480 OTTERS WHISTLE 596 00:37:42,480 --> 00:37:44,880 Mum teaches them how to hunt underwater 597 00:37:44,880 --> 00:37:47,560 and over the next eight months 598 00:37:47,560 --> 00:37:52,000 they'll learn all the skills they need to become fully independent. 599 00:37:56,080 --> 00:37:59,120 So if you ever see a group of otters together like this, 600 00:37:59,120 --> 00:38:01,560 it's invariably a mother and her cubs - 601 00:38:01,560 --> 00:38:04,560 the male dog otter doesn't stick around. 602 00:38:08,400 --> 00:38:13,200 Whether on a river or by the coast, dog otters are loners. 603 00:38:13,200 --> 00:38:16,760 As soon as they're fully grown they move away from home 604 00:38:16,760 --> 00:38:19,240 to find territories of their own. 605 00:38:19,240 --> 00:38:22,680 And this they guard aggressively against anyone. 606 00:38:28,320 --> 00:38:30,840 One of the ways they define their territory 607 00:38:30,840 --> 00:38:33,240 is by marking its boundaries with scent. 608 00:38:35,240 --> 00:38:39,680 Otter spraint - their poo - is a language all of its own. 609 00:38:39,680 --> 00:38:43,440 Left on rocks or sandy mounds, it's a warning to keep out, 610 00:38:43,440 --> 00:38:47,280 a message that Simon has clearly failed to heed. 611 00:38:47,280 --> 00:38:49,720 And here it is, on all of the little high points. 612 00:38:49,720 --> 00:38:53,560 This rock, a great mass of spraint here, here. 613 00:38:53,560 --> 00:38:55,520 Behind me, here. 614 00:38:55,520 --> 00:38:57,440 And if you get a close look 615 00:38:57,440 --> 00:39:01,480 and there are still the odd bubble on, then just keep still 616 00:39:01,480 --> 00:39:04,280 cos the chances are the otter's only just been here 617 00:39:04,280 --> 00:39:06,120 and it's somewhere nearby. 618 00:39:09,200 --> 00:39:12,960 Spraint is actually a complex method of communication, 619 00:39:12,960 --> 00:39:16,280 and just how complex has only recently become clear. 620 00:39:20,560 --> 00:39:23,040 Oh, yeah. Look at that. 621 00:39:23,040 --> 00:39:26,600 You can clearly see the reflective qualities there 622 00:39:26,600 --> 00:39:29,920 of a lot of fish scales. 623 00:39:29,920 --> 00:39:32,600 But, of course, to the otters, 624 00:39:32,600 --> 00:39:36,040 this material has another very clear function 625 00:39:36,040 --> 00:39:39,920 and it's all about communicating through smell 626 00:39:39,920 --> 00:39:43,800 and I've got some fresher samples that have been collected here 627 00:39:43,800 --> 00:39:48,080 that haven't dried out and I'm going to give them a bit of a sniff test. 628 00:39:48,080 --> 00:39:52,240 Now, some people say that it smells like freshly mown hay, 629 00:39:52,240 --> 00:39:55,800 some, jasmine tea, but to me, 630 00:39:55,800 --> 00:39:58,920 that's just pure otter. 631 00:39:58,920 --> 00:40:03,760 The smell is made up of 100 different components, 632 00:40:03,760 --> 00:40:06,760 but 17 of those are used by the otters 633 00:40:06,760 --> 00:40:10,560 to identify the spraint to an individual level. 634 00:40:10,560 --> 00:40:13,120 So if an otter was to sniff this itself 635 00:40:13,120 --> 00:40:16,480 it could tell you whether that was male or female, 636 00:40:16,480 --> 00:40:18,720 five, six, seven, eight years old, 637 00:40:18,720 --> 00:40:22,720 whether it was sexually mature, whether it was sexually active. 638 00:40:22,720 --> 00:40:27,400 It's Brian and he's had a fish masala, without any doubt. 639 00:40:27,400 --> 00:40:31,080 Now we can take DNA from this spraint 640 00:40:31,080 --> 00:40:35,480 and identify the otters down to individual level. 641 00:40:35,480 --> 00:40:39,640 So, you see, far from being a nuisance and something a bit quirky, 642 00:40:39,640 --> 00:40:43,120 otter spraint is incredibly useful both to man and beast. 643 00:40:46,320 --> 00:40:51,600 Over the past few decades, signs such as spraint and paw prints 644 00:40:51,600 --> 00:40:54,880 have been used to try to chart the otter's comeback in England, 645 00:40:54,880 --> 00:40:58,880 and although overall this shows encouraging signs of recovery, 646 00:40:58,880 --> 00:41:03,960 it's difficult to know exactly how many otters there are now in the UK. 647 00:41:05,400 --> 00:41:08,840 Trying to identify individual otters using their tracks 648 00:41:08,840 --> 00:41:12,960 and their spraint is notoriously difficult, but in the future 649 00:41:12,960 --> 00:41:17,200 this new DNA technique should make it much, much easier 650 00:41:17,200 --> 00:41:21,800 and help us build a more reliable picture of overall otter numbers. 651 00:41:25,000 --> 00:41:29,320 Research so far suggests otters are steadily recovering, 652 00:41:29,320 --> 00:41:33,280 with numbers estimated at somewhere around 2,000 in England 653 00:41:33,280 --> 00:41:36,040 and perhaps 8,000 in Scotland and Wales. 654 00:41:45,880 --> 00:41:50,080 In Scotland, where hunting's now been banned for 30 years, 655 00:41:50,080 --> 00:41:53,840 Simon recently found signs that otters are getting bolder. 656 00:41:56,200 --> 00:41:59,680 This is an otter trap, or, as they are known locally, 657 00:41:59,680 --> 00:42:04,640 an otter "hoose", built to trap otters for their fur. 658 00:42:06,960 --> 00:42:11,600 This would have been the area that the otter was attracted to going in 659 00:42:11,600 --> 00:42:16,960 and here there would have been a wooden sliding trapdoor 660 00:42:16,960 --> 00:42:20,360 connected to a string that went inside the structure 661 00:42:20,360 --> 00:42:24,360 to a pressure pad and if the otter walked inside, 662 00:42:24,360 --> 00:42:27,720 touched the rock, the door would close behind it. 663 00:42:27,720 --> 00:42:31,240 And then when the otter hunter came by on his rounds 664 00:42:31,240 --> 00:42:35,400 he'd lift one of the big rocks at the top, kill the otter, take it out. 665 00:42:35,400 --> 00:42:38,240 Now, of course, otters are fully protected 666 00:42:38,240 --> 00:42:42,640 and what is so fantastic and ironic is that this otter trap at least 667 00:42:42,640 --> 00:42:47,080 is being used very, very regularly by the local otter, or otters, 668 00:42:47,080 --> 00:42:50,280 as a resting place, and their sign is everywhere. 669 00:42:52,440 --> 00:42:55,720 There's a spraint here which is no more than an hour old 670 00:42:55,720 --> 00:42:59,800 and I can see where the animal has collected bedding 671 00:42:59,800 --> 00:43:04,840 and made a lovely, warm, cosy nest just inside. 672 00:43:04,840 --> 00:43:07,680 How strange that a structure designed to kill otters 673 00:43:07,680 --> 00:43:09,680 should prove to be a des-res. 674 00:43:14,080 --> 00:43:16,840 As they slowly spread across the UK, 675 00:43:16,840 --> 00:43:20,080 otters are finding new friends to help them on their way. 676 00:43:21,280 --> 00:43:23,520 On a rain-soaked day last year 677 00:43:23,520 --> 00:43:27,680 I went to help some volunteers, led by inventor Chris Matcher, 678 00:43:27,680 --> 00:43:30,400 making specially constructed otter holts. 679 00:43:34,640 --> 00:43:38,440 'I've put up plenty of bird boxes but an otter prefab? 680 00:43:39,800 --> 00:43:43,280 'Like any flatpack, well, you know how it goes.' 681 00:43:43,280 --> 00:43:46,680 D? D. Where's D? Which way round does it go? 682 00:43:46,680 --> 00:43:49,680 It should be the other way around. That should be that way round. 683 00:43:49,680 --> 00:43:52,800 B. That's B. 684 00:43:52,800 --> 00:43:54,400 (It never goes smoothly.) 685 00:43:54,400 --> 00:43:56,560 'But, seriously, when you're not filming, 686 00:43:56,560 --> 00:43:59,040 'this holt can be put together in under an hour.' 687 00:44:00,680 --> 00:44:03,320 Girls with power drills - very exciting! 688 00:44:08,040 --> 00:44:11,720 Done. Chris, thank you for a marvellous day out. 689 00:44:11,720 --> 00:44:14,240 Look what we've created. Thank you very much. 690 00:44:14,240 --> 00:44:17,320 I shall volunteer for more of this sort of work(!) 691 00:44:19,360 --> 00:44:21,840 Let's get out of this! 692 00:44:23,840 --> 00:44:28,200 Excellent! And helping otters isn't just about building nest boxes - 693 00:44:28,200 --> 00:44:30,560 sometimes it means playing surrogate mum. 694 00:44:34,400 --> 00:44:38,200 When these three orphaned cubs were found by a roadside, 695 00:44:38,200 --> 00:44:41,000 a local wildlife sanctuary took them in. 696 00:44:41,000 --> 00:44:42,960 The cubs had never been in water 697 00:44:42,960 --> 00:44:46,400 so when the time was right, a swimming lesson was arranged. 698 00:44:50,440 --> 00:44:52,080 Over the next 18 months, 699 00:44:52,080 --> 00:44:55,200 the cubs were taught to hunt and fend for themselves 700 00:44:55,200 --> 00:44:58,160 and eventually they were put back into the river 701 00:44:58,160 --> 00:45:00,200 very close to where they were found. 702 00:45:07,080 --> 00:45:09,800 The one thing that has helped the otter's recovery 703 00:45:09,800 --> 00:45:12,960 more than anything else is the clean-up of our rivers. 704 00:45:14,680 --> 00:45:17,440 And although pollution is still a problem, 705 00:45:17,440 --> 00:45:19,720 many rivers have improved dramatically. 706 00:45:22,160 --> 00:45:26,000 Otters are a litmus, a test, for the health of a river 707 00:45:26,000 --> 00:45:30,000 and their presence shows that now many of our rivers 708 00:45:30,000 --> 00:45:32,880 are the healthiest they've been for 20 years. 709 00:45:36,320 --> 00:45:38,400 And that's good news, 710 00:45:38,400 --> 00:45:41,040 not only for otters, but for all our river life. 711 00:45:47,400 --> 00:45:50,800 It's not just our cameras catching glimpses of otters - 712 00:45:50,800 --> 00:45:54,200 here are some of your photos from around the country, 713 00:45:54,200 --> 00:45:56,560 courtesy of our Flickr photo group. 714 00:46:01,160 --> 00:46:03,920 No longer restricted to coast and countryside, 715 00:46:03,920 --> 00:46:07,440 some 21st-century otters are living right among us. 716 00:46:10,440 --> 00:46:12,520 In the cathedral city of Winchester, 717 00:46:12,520 --> 00:46:16,480 CCTV captured these remarkable images. 718 00:46:18,720 --> 00:46:21,760 A mother and no fewer than three cubs 719 00:46:21,760 --> 00:46:25,040 playing quite happily directly underneath the city's mill. 720 00:46:26,920 --> 00:46:30,360 The Wildlife Trust now estimate that otters are established 721 00:46:30,360 --> 00:46:33,440 in at least 13 urban centres. 722 00:46:33,440 --> 00:46:36,080 In Manchester, evidence of otter activity 723 00:46:36,080 --> 00:46:39,240 was recorded for the first time since the early 1900s. 724 00:46:41,560 --> 00:46:45,400 And in Newcastle, Simon was thrilled by the sight of an otter 725 00:46:45,400 --> 00:46:46,920 in the heart of the city. 726 00:46:50,160 --> 00:46:54,560 That's the trail of bubbles that every otter watcher wants to see. 727 00:46:54,560 --> 00:46:57,200 I find it truly wonderful 728 00:46:57,200 --> 00:47:02,280 to think that as we drive over these bridges in city centres, 729 00:47:02,280 --> 00:47:06,120 scenes like these might well be playing out 730 00:47:06,120 --> 00:47:09,160 under our wheels all over the country. 731 00:47:12,240 --> 00:47:16,840 And this is testament to an enormous turnaround 732 00:47:16,840 --> 00:47:19,160 in the way we treat our waterways. 733 00:47:19,160 --> 00:47:23,080 The fact that otters and herons can find sufficient food 734 00:47:23,080 --> 00:47:29,120 in these urban rivers and pools is a clear sign 735 00:47:29,120 --> 00:47:32,840 that these freshwaters live up to their name - just that, fresh... 736 00:47:35,360 --> 00:47:36,760 ..and life-giving. 737 00:47:39,440 --> 00:47:42,720 Now, otters are naturally long-distance travellers 738 00:47:42,720 --> 00:47:45,640 and that's what's bringing them into our cities. 739 00:47:45,640 --> 00:47:50,320 But not everyone is quite so pleased to see them in the suburbs. 740 00:47:50,320 --> 00:47:53,080 Some garden ponds have been receiving 741 00:47:53,080 --> 00:47:55,360 some very unwelcome visitors. 742 00:47:58,920 --> 00:48:04,640 Imagine a small pond with a big, sluggish koi carp in it. 743 00:48:04,640 --> 00:48:08,720 To an opportunist like an otter, it's irresistible. 744 00:48:20,760 --> 00:48:23,600 It's not just ornamental fish ponds that are getting hit. 745 00:48:23,600 --> 00:48:25,640 Up and down the country, 746 00:48:25,640 --> 00:48:29,680 otters are becoming a real headache for commercial fisheries too 747 00:48:29,680 --> 00:48:33,280 and I'm off to Somerset to find out exactly what's going on. 748 00:48:38,800 --> 00:48:42,440 This lake is owned by an angling club in Bridgwater 749 00:48:42,440 --> 00:48:45,320 and today its vice president, Danny Danahy, 750 00:48:45,320 --> 00:48:47,680 is having to restock it with carp. 751 00:48:49,520 --> 00:48:51,240 Now, Danny, 752 00:48:51,240 --> 00:48:55,760 I can't help noticing the whole of the lake is like Colditz. 753 00:48:55,760 --> 00:48:59,520 You've had to go to some really extreme lengths to protect this. 754 00:48:59,520 --> 00:49:01,320 Yes. What has happened? 755 00:49:01,320 --> 00:49:08,160 Over the last four years, we've put in approximately 4,000 fish. Right. 756 00:49:08,160 --> 00:49:11,240 Last Thursday, we had about 50. 757 00:49:11,240 --> 00:49:13,920 Mainly roach, small bream. 758 00:49:13,920 --> 00:49:19,000 The 1,500 carp we put in more or less gone. 759 00:49:19,000 --> 00:49:22,400 That must have been crushingly disappointing for you. 760 00:49:22,400 --> 00:49:25,960 Terribly. Terribly. It's costing us an awful lot of money. 761 00:49:25,960 --> 00:49:29,360 The fence, we've put the fence up to try and stop 762 00:49:29,360 --> 00:49:32,000 what we believe is the otter doing it. 763 00:49:34,160 --> 00:49:37,440 'There are a variety of different animals it might be, 764 00:49:37,440 --> 00:49:39,080 'not just otters. 765 00:49:39,080 --> 00:49:40,920 'Mink will go for roach and bream, 766 00:49:40,920 --> 00:49:43,760 'and with a slump in fish stocks out at sea, 767 00:49:43,760 --> 00:49:47,640 'more and more cormorants are coming inland to hunt.' 768 00:49:47,640 --> 00:49:52,120 What's led you to think that it is the otter in general? 769 00:49:52,120 --> 00:49:54,920 Fishermen are actually seeing them on the big lake over there. 770 00:49:54,920 --> 00:49:59,720 We've also found paw prints, spats, dead fish. 771 00:49:59,720 --> 00:50:02,640 Dead fish, yeah. Dead fish. 772 00:50:02,640 --> 00:50:05,640 From the photos of fish carcasses taken by the club, 773 00:50:05,640 --> 00:50:08,360 it does look like otter. 774 00:50:08,360 --> 00:50:11,400 They'll go for carp because they're slow and easy to catch 775 00:50:11,400 --> 00:50:14,840 and they typically pick out the muscle just behind the gills, 776 00:50:14,840 --> 00:50:16,880 leaving the rest of the fish untouched. 777 00:50:18,720 --> 00:50:20,840 We believe that they're coming from the river, 778 00:50:20,840 --> 00:50:23,000 which is in that direction. Ah. OK? 779 00:50:23,000 --> 00:50:26,080 And we believe that they're using that as a superhighway 780 00:50:26,080 --> 00:50:28,400 to come off onto lakes like ours. 781 00:50:28,400 --> 00:50:31,320 And they're opportunistically looking for feeding stations 782 00:50:31,320 --> 00:50:32,960 and they've found your fisheries here. 783 00:50:32,960 --> 00:50:34,960 Found our fishery and helped themselves. 784 00:50:36,360 --> 00:50:39,640 As otters are legally protected, Danny's had to invest 785 00:50:39,640 --> 00:50:42,520 in putting up some sort of barrier to keep them out. 786 00:50:43,840 --> 00:50:45,920 And you had to sink that into the ground? 787 00:50:45,920 --> 00:50:49,240 That's gone into the ground, about 18 inches into the ground. 788 00:50:49,240 --> 00:50:53,000 It's not a cheap option. No, no. Very, very expensive. 789 00:50:53,000 --> 00:50:56,840 For a lot of people, it could be the difference between being in business 790 00:50:56,840 --> 00:50:59,520 or going out of business, you know? Yeah. 791 00:50:59,520 --> 00:51:02,080 And stock is the most important thing. 792 00:51:04,600 --> 00:51:06,760 Hmm, that's tricky. 793 00:51:06,760 --> 00:51:09,480 And the growth in commercial fisheries and fish farms 794 00:51:09,480 --> 00:51:12,480 happened when there were hardly any otters around. 795 00:51:12,480 --> 00:51:14,960 And now the otters are making a comeback... 796 00:51:14,960 --> 00:51:17,120 Well, for an otter, this must be like finding 797 00:51:17,120 --> 00:51:20,040 a free all-you-can-eat buffet. 798 00:51:20,040 --> 00:51:24,080 I suppose the only option is to think very seriously about fencing. 799 00:51:26,960 --> 00:51:30,360 All these sightings of otters could give the impression 800 00:51:30,360 --> 00:51:32,640 that their comeback is complete, 801 00:51:32,640 --> 00:51:35,880 but, in fact, whilst it looks like they've recovered their range, 802 00:51:35,880 --> 00:51:38,600 they definitely haven't recovered their numbers. 803 00:51:42,360 --> 00:51:45,040 But they ARE coming back. 804 00:51:45,040 --> 00:51:47,240 And that means we've all got a better chance 805 00:51:47,240 --> 00:51:48,720 of seeing one for ourselves. 806 00:51:50,320 --> 00:51:53,760 So how do we go about it? Well, I know just the man. 807 00:51:55,200 --> 00:51:58,080 OK, Charlie, I've got maybe ten minutes. 808 00:51:58,080 --> 00:52:01,520 I am desperate to see an otter. How do I see one? 809 00:52:01,520 --> 00:52:04,320 Well, you're probably not going to see one, to be honest, 810 00:52:04,320 --> 00:52:07,600 but there's a whole selection of signs that you can look for 811 00:52:07,600 --> 00:52:10,240 to tell you if there is an otter there, at least. 812 00:52:10,240 --> 00:52:13,040 So we have to turn otter detective. 813 00:52:17,840 --> 00:52:19,960 I know the basics of what we're after - 814 00:52:19,960 --> 00:52:22,600 paw prints, holts in the banks 815 00:52:22,600 --> 00:52:26,480 and the heady smell of jasmine tea from their spraint - 816 00:52:26,480 --> 00:52:31,120 but I'm hoping Charlie can fill me in with some fieldcraft tips. 817 00:52:31,120 --> 00:52:33,600 I've got the right man - he's scaring me to death 818 00:52:33,600 --> 00:52:37,040 with gruesome tales of their leftovers. 819 00:52:37,040 --> 00:52:41,320 If an otter eats a trout, it'll hold it like that on the body 820 00:52:41,320 --> 00:52:42,920 and start with the head. 821 00:52:42,920 --> 00:52:45,800 You know what I mean? Till it's gone. 822 00:52:45,800 --> 00:52:48,840 You'll find the crayfish, it'll be the head and the claws they'll leave. 823 00:52:48,840 --> 00:52:52,960 If you find the back of a crab, often they'll have a single hole in it. 824 00:52:52,960 --> 00:52:55,680 You know, the canine of the otter has gone through it. 825 00:52:55,680 --> 00:52:58,320 Rat tails, so they've eaten the whole of the rest of the rat 826 00:52:58,320 --> 00:53:00,080 and they've just left the tail. 827 00:53:00,080 --> 00:53:04,680 'OK, Charlie, enough. Show me some hard evidence now!' 828 00:53:04,680 --> 00:53:07,440 What's the very first thing in your top ten otter signs? 829 00:53:07,440 --> 00:53:09,920 What are we looking for? This, basically, look. 830 00:53:09,920 --> 00:53:11,480 All these little dotty things? 831 00:53:11,480 --> 00:53:13,600 Look, there you go. All the way, straightaway. 832 00:53:13,600 --> 00:53:16,440 Any nice wet bit of mud along the edge of the river, 833 00:53:16,440 --> 00:53:19,280 if it's got otters, it's generally going to have footprints. 834 00:53:19,280 --> 00:53:21,320 That could be a dog to the untutored eye. 835 00:53:21,320 --> 00:53:23,160 What are we looking for that makes it otter? 836 00:53:23,160 --> 00:53:25,360 Well, key thing is, it's got five toes, an otter, 837 00:53:25,360 --> 00:53:28,720 and dogs and foxes have got four. But they're so distinctive. 838 00:53:28,720 --> 00:53:32,480 Look, you can see these teardrop paw marks, 839 00:53:32,480 --> 00:53:34,520 like upside-down teardrops, straightaway. 840 00:53:34,520 --> 00:53:36,320 They are sharp at the end, like that. 841 00:53:36,320 --> 00:53:39,200 What sort of size? 842 00:53:39,200 --> 00:53:41,600 Look at that! All right, let's measure one. 843 00:53:41,600 --> 00:53:43,040 I always have a little measurer. 844 00:53:43,040 --> 00:53:45,200 You're looking at about five centimetres. 845 00:53:45,200 --> 00:53:48,960 I would have said that's sub adult, teenager, maybe. Teenage otter? 846 00:53:48,960 --> 00:53:52,160 Early teens. Early teens otter? Yeah, you know that it'll have Mum with it. 847 00:53:52,160 --> 00:53:55,040 So if there's a mum and a cub, 848 00:53:55,040 --> 00:53:58,080 at somewhere on this river will be a dog otter, 849 00:53:58,080 --> 00:54:00,000 cos he'll have a huge territory, 850 00:54:00,000 --> 00:54:02,640 encompassing several different females. 851 00:54:02,640 --> 00:54:04,760 So you know just from seeing these small prints 852 00:54:04,760 --> 00:54:06,600 there are probably three otters here, 853 00:54:06,600 --> 00:54:09,120 even though we are only seeing the prints of one. Amazing. 854 00:54:15,720 --> 00:54:18,200 Now, Charlie, this is interesting. 855 00:54:18,200 --> 00:54:22,840 It looks like a sort of a trail here going up there. Could that be otter? 856 00:54:22,840 --> 00:54:25,080 Absolutely. Otters cut corners all the time, 857 00:54:25,080 --> 00:54:27,200 and they cut corners when they are going upriver. 858 00:54:27,200 --> 00:54:29,400 They don't need to cut corners when going down river 859 00:54:29,400 --> 00:54:31,240 because they've got the energy of the river 860 00:54:31,240 --> 00:54:34,440 so they're not expending any energy, but when they're coming upriver, 861 00:54:34,440 --> 00:54:37,360 it's much easier to get out and cut a corner off. 862 00:54:37,360 --> 00:54:39,760 Now, obviously, otters are fishing a lot of the time, 863 00:54:39,760 --> 00:54:42,080 but sometimes they're not, they're just on a mission. 864 00:54:42,080 --> 00:54:43,440 And you're trying to film them, 865 00:54:43,440 --> 00:54:45,560 trying to keep up with them and they're just... 866 00:54:45,560 --> 00:54:50,320 for two or three miles, some of them, and you think, "Where are you going? 867 00:54:50,320 --> 00:54:53,440 "Are you late for the cinema? Is the fishmonger shutting?" 868 00:54:53,440 --> 00:54:56,560 I don't really get it, but this is when they're cutting corners. 869 00:54:56,560 --> 00:54:59,400 Otters on a mission. He knows what he's on about. 870 00:54:59,400 --> 00:55:02,040 OK. 871 00:55:02,040 --> 00:55:05,720 O0h, it's a bit deep there, Martin. You have to go tiptoes. 872 00:55:05,720 --> 00:55:10,000 That is the classic otter hole. That is an otter hole. 873 00:55:10,000 --> 00:55:13,000 Yeah, it's a hole in the root system of an ash tree, 874 00:55:13,000 --> 00:55:14,880 which the otters love to dig up into. 875 00:55:14,880 --> 00:55:19,120 So where's the entrance? Is the entrance that bit there where it's sort of a bit muddy? 876 00:55:19,120 --> 00:55:21,120 Yeah, and you can just see the hole in there. 877 00:55:21,120 --> 00:55:23,000 There's not just one here either. 878 00:55:23,000 --> 00:55:25,240 So there's another one 200 metres down there... 879 00:55:25,240 --> 00:55:28,160 Right. ..under a hazel tree. And all the way up the river, 880 00:55:28,160 --> 00:55:30,240 every few hundred metres, there's another one. 881 00:55:32,640 --> 00:55:34,760 That's a classic rock - 882 00:55:34,760 --> 00:55:37,560 the otter is going to come up, he can go out and poo on there. 883 00:55:39,600 --> 00:55:41,760 Oh, look at that. Hey-hey! 884 00:55:41,760 --> 00:55:45,920 Ooh. Isn't it lovely? Look at that! 885 00:55:45,920 --> 00:55:48,360 Now, most otter scientists and enthusiasts, 886 00:55:48,360 --> 00:55:51,400 they like to pick it up and move it around in their hands. 887 00:55:51,400 --> 00:55:54,920 Not me. I use a stick. 888 00:55:54,920 --> 00:55:57,560 Are you listening, Chris Packham? 889 00:55:57,560 --> 00:56:02,200 OK, so you can see they've been eating crayfish here. Look at that. 890 00:56:02,200 --> 00:56:05,000 The big bits of shell, and that's why it's red. 891 00:56:05,000 --> 00:56:07,320 Well, here's the crayfish, but this is very different. 892 00:56:07,320 --> 00:56:08,440 It's green, for a start. 893 00:56:08,440 --> 00:56:10,320 It's very fresh and it's green. 894 00:56:10,320 --> 00:56:14,960 They've been eating fish here. I can see little fish bones inside that. 895 00:56:14,960 --> 00:56:17,680 This is... I mean, it's almost still wet 896 00:56:17,680 --> 00:56:20,960 so you're talking within the last 48 hours. 897 00:56:20,960 --> 00:56:23,920 And, interestingly, sometimes you find these 898 00:56:23,920 --> 00:56:27,560 and they've got bits of moor hen in them. They love moor hen. 899 00:56:27,560 --> 00:56:29,000 This is a signalling system 900 00:56:29,000 --> 00:56:31,840 so they're going to drop a little bit here and a little bit further up 901 00:56:31,840 --> 00:56:33,480 and a little bit further up. Yeah. 902 00:56:33,480 --> 00:56:36,480 I mean, they don't sit there for 15 minutes reading National Geographic. 903 00:56:36,480 --> 00:56:38,760 MARTIN LAUGHS 904 00:56:39,960 --> 00:56:41,600 Are there any final tips? 905 00:56:41,600 --> 00:56:44,800 Well, if you want to see an otter... I do, I do. 906 00:56:44,800 --> 00:56:47,280 ..you've got to get the wind direction right. 907 00:56:47,280 --> 00:56:50,320 So what you want is you want the wind coming off the otter 908 00:56:50,320 --> 00:56:52,760 and blowing into your face and if you do that 909 00:56:52,760 --> 00:56:56,400 you've got a pretty good chance of seeing one. Brilliant. 910 00:56:59,480 --> 00:57:02,920 There we are - the Springwatch Guide to Otters. 911 00:57:02,920 --> 00:57:07,360 We've learnt what an otter is, where it lives, 912 00:57:07,360 --> 00:57:10,200 what it gets up to on our coasts and rivers... 913 00:57:11,600 --> 00:57:14,400 ..even in our cities. 914 00:57:14,400 --> 00:57:17,640 We know its history, and, most importantly, 915 00:57:17,640 --> 00:57:19,960 how to go about seeing one. 916 00:57:22,440 --> 00:57:26,120 But there is one last question. 917 00:57:26,120 --> 00:57:29,480 Did I, during the making of this film, 918 00:57:29,480 --> 00:57:31,560 get to see an otter for myself? 919 00:57:33,160 --> 00:57:34,160 Yes! 920 00:57:34,160 --> 00:57:36,080 Charlie, Charlie, Charlie! 921 00:57:36,080 --> 00:57:38,320 I just saw an otter! No! I swear to you. Where? 922 00:57:38,320 --> 00:57:41,080 I just saw an otter swimming straight towards us up here. 923 00:57:45,120 --> 00:57:48,200 Just literally in this pool here! 924 00:57:48,200 --> 00:57:51,080 It was coming straight towards us. Did it see us? 925 00:57:51,080 --> 00:57:54,280 Yes, because it was only there, feet away from us. 926 00:57:54,280 --> 00:57:56,960 The first time in my whole life. 927 00:57:56,960 --> 00:57:59,600 We've been here two minutes! 928 00:57:59,600 --> 00:58:02,800 But I've only seen about five otters here in the daytime 929 00:58:02,800 --> 00:58:04,400 in my whole life living. 930 00:58:04,400 --> 00:58:06,880 It was an otter in that pool not 20 feet away 931 00:58:06,880 --> 00:58:09,560 from where we are right now. 932 00:58:09,560 --> 00:58:14,320 I never dreamt I would see a river otter for myself 933 00:58:14,320 --> 00:58:17,080 and we'd only been there about two minutes. 934 00:58:17,080 --> 00:58:19,960 It just shows it can happen. 935 00:58:19,960 --> 00:58:22,160 But I promise you one thing - 936 00:58:22,160 --> 00:58:26,200 if you ever get to see a wild otter for yourself, 937 00:58:26,200 --> 00:58:29,400 you will remember it for the rest of your life. 938 00:58:44,760 --> 00:58:47,920 Subtitles by Red Bee Media Ltd