1 00:00:48,560 --> 00:00:53,900 Forests at first sight may seem quiet and tranquil. 2 00:01:01,140 --> 00:01:04,680 But today we can explore them in new ways. 3 00:01:07,880 --> 00:01:10,100 And from a new perspective. 4 00:01:12,660 --> 00:01:16,660 And in fact, they're full of unexpected connections. 5 00:01:17,800 --> 00:01:21,600 relationships, and even secret messages. 6 00:01:34,400 --> 00:01:40,360 Only now are we discovering how strange and complex 7 00:01:40,360 --> 00:01:43,500 forests actually are. 8 00:02:03,020 --> 00:02:05,420 The rainforests of Borneo. 9 00:02:10,400 --> 00:02:15,640 A pair of oriental pied hornbills are renewing their partnership. 10 00:02:21,300 --> 00:02:23,220 They mate for life. 11 00:02:32,840 --> 00:02:36,200 And this year's nesting season is just starting. 12 00:02:43,740 --> 00:02:48,540 Before they face the challenges ahead they reaffirm their bond. 13 00:02:57,640 --> 00:03:01,880 And they do so with an unusual ritual. 14 00:03:04,110 --> 00:03:07,590 at the entrance to a bat cave that they know well. 15 00:03:41,070 --> 00:03:46,750 This rather curious gift isn't normally on their menu. 16 00:03:49,190 --> 00:03:55,850 But it both demonstrates devotion and reassures the female that her mate 17 00:03:55,850 --> 00:03:57,590 will provide for her. 18 00:04:05,350 --> 00:04:09,830 In the coming weeks, she will depend on him in the most... 19 00:04:10,140 --> 00:04:11,340 extraordinary way. 20 00:04:20,120 --> 00:04:23,900 Nesting is a dangerous time for any bird. 21 00:04:28,480 --> 00:04:33,680 The hole in this tree trunk will provide vital protection. 22 00:04:35,380 --> 00:04:37,000 Just what she wants. 23 00:04:42,920 --> 00:04:48,240 Once settled inside, the female does something truly bizarre. 24 00:04:50,800 --> 00:04:53,960 She pulls out her flight feathers. 25 00:04:57,140 --> 00:05:03,940 She is not going to need them because she will be staying in here for quite 26 00:05:03,940 --> 00:05:04,940 time. 27 00:05:10,410 --> 00:05:15,590 It's not only a little cramped, it also lacks basic amenities. 28 00:05:24,270 --> 00:05:27,670 Now her partner brings her a beakful of mud. 29 00:05:30,250 --> 00:05:33,770 And she begins to seal herself in. 30 00:05:50,320 --> 00:05:55,340 She has turned the tree hole into a predator -proof fortress. 31 00:06:13,180 --> 00:06:16,860 But it's also a prison. 32 00:06:45,040 --> 00:06:47,900 Her partner, however, is a regular visitor. 33 00:06:52,180 --> 00:06:58,940 For the next two months, he will deliver all her food directly to her 34 00:06:58,940 --> 00:06:59,940 door. 35 00:07:10,680 --> 00:07:13,020 But she can be fuzzy. 36 00:07:26,540 --> 00:07:28,640 He's going to have his work cut out. 37 00:08:36,080 --> 00:08:42,820 It may seem that he has been doing all the work, but she too has been fully 38 00:08:42,820 --> 00:08:43,820 occupied. 39 00:08:45,540 --> 00:08:50,880 The food he has brought has enabled her to produce two precious eggs. 40 00:08:56,860 --> 00:09:02,700 She will keep them safe for another six weeks until the young have grown and 41 00:09:02,700 --> 00:09:03,700 fledged. 42 00:09:06,760 --> 00:09:11,700 And then both she and they will break out of their confinement. 43 00:09:26,680 --> 00:09:33,560 But until then, this devoted couple are going to be very 44 00:09:33,560 --> 00:09:34,560 busy indeed. 45 00:09:47,630 --> 00:09:49,990 Join us on an extraordinary journey. 46 00:09:54,230 --> 00:09:56,990 To a world never revealed before. 47 00:10:04,610 --> 00:10:08,010 Who knows what is still out there to be discovered. 48 00:10:22,320 --> 00:10:27,880 The warmth and the moisture of rainforests enables their inhabitants to 49 00:10:27,880 --> 00:10:30,220 in both numbers and variety. 50 00:10:35,260 --> 00:10:40,300 And here in the Amazon live many strange species. 51 00:10:48,320 --> 00:10:50,700 This is a tree hopper. 52 00:10:53,000 --> 00:10:55,840 one of hundreds of different types in this forest. 53 00:11:05,680 --> 00:11:11,640 They not only have a bizarre appearance, but they also communicate 54 00:11:11,640 --> 00:11:15,900 in a remarkable way, too. 55 00:11:23,560 --> 00:11:28,640 Vibrating their bodies, they send signals through the forest plants they 56 00:11:28,640 --> 00:11:29,640 on. 57 00:11:40,820 --> 00:11:45,260 Most of these messages we can only hear by using special microphones. 58 00:11:53,530 --> 00:11:56,590 The treehopper species has its own repertoire. 59 00:12:05,130 --> 00:12:11,150 And every sound 60 00:12:11,150 --> 00:12:15,410 has its own particular meaning. 61 00:12:22,570 --> 00:12:29,410 Whether it is to attract a mate, share information about food, 62 00:12:29,530 --> 00:12:36,510 or warn each other about the arrival 63 00:12:36,510 --> 00:12:37,510 of predators. 64 00:12:52,650 --> 00:12:58,690 This treehopper mother communicates with her young, encouraging them to stay 65 00:12:58,690 --> 00:13:01,570 together so that she can protect them. 66 00:13:09,330 --> 00:13:14,650 For there are plenty here waiting to eat young treehoppers. 67 00:13:19,110 --> 00:13:21,750 Ants on the hunt. 68 00:13:39,120 --> 00:13:41,860 Treehoppers know how to defend themselves. 69 00:13:46,760 --> 00:13:49,980 But not all threats are so easily dealt with. 70 00:13:59,320 --> 00:14:01,300 An assassin bug. 71 00:14:03,880 --> 00:14:08,750 Armed with piercing mouthparts, and sticky front legs. 72 00:14:15,630 --> 00:14:20,710 Capable of literally sucking the life out of her entire broom. 73 00:14:31,730 --> 00:14:35,130 He can try to block the assassin's path. 74 00:14:37,420 --> 00:14:38,880 But she can't guard them all. 75 00:14:40,860 --> 00:14:45,340 She needs help from friends in high places. 76 00:15:24,170 --> 00:15:25,270 They're very aggressive. 77 00:15:28,070 --> 00:15:31,430 This is more than the assassin bug bargained for. 78 00:15:33,550 --> 00:15:35,030 Mission accomplished. 79 00:15:37,530 --> 00:15:39,350 Her brood are safe. 80 00:15:42,170 --> 00:15:45,210 The bees don't protect the treehoppers for free. 81 00:15:46,810 --> 00:15:50,070 A little tickle on a treehopper's back. 82 00:15:52,400 --> 00:15:54,740 And they exude a sugary liquid. 83 00:16:00,540 --> 00:16:01,540 Honeydew. 84 00:16:04,340 --> 00:16:07,380 A sweet reward for protecting them. 85 00:16:20,200 --> 00:16:26,020 It's just one of the countless ways in which forest species work together. 86 00:16:50,140 --> 00:16:52,660 and truly extraordinary sound. 87 00:17:01,820 --> 00:17:04,400 These are doles. 88 00:17:06,980 --> 00:17:10,319 Wild dogs that whistle. 89 00:17:14,760 --> 00:17:18,960 Like treehoppers, they too communicate in secret. 90 00:17:19,980 --> 00:17:21,980 but for a different reason. 91 00:17:29,720 --> 00:17:34,160 Hunting in a dense teak forest is difficult, 92 00:17:34,360 --> 00:17:40,540 especially so if your prey is three times your own size. 93 00:17:45,700 --> 00:17:48,580 The only way for doles to succeed 94 00:17:50,120 --> 00:17:51,580 is to work as a team. 95 00:17:59,500 --> 00:18:03,140 This family has four growing pups. 96 00:18:28,200 --> 00:18:31,060 And Chitaudea could feed the entire pack. 97 00:18:39,580 --> 00:18:41,940 The pack must get close. 98 00:18:46,440 --> 00:18:48,420 Without being detected. 99 00:19:04,650 --> 00:19:11,430 But with eyes and ears everywhere, the deer are soon 100 00:19:11,430 --> 00:19:13,430 aware of the dog's presence. 101 00:19:26,150 --> 00:19:28,570 The back can't afford to give up. 102 00:19:31,550 --> 00:19:33,670 They may have better luck here. 103 00:19:38,090 --> 00:19:41,670 The vegetation is dense and provides better cover. 104 00:19:44,470 --> 00:19:47,690 But the dolls could easily lose track of one another. 105 00:19:49,050 --> 00:19:51,750 So they use their unique whistles. 106 00:20:12,270 --> 00:20:15,230 understand these quiet, unobtrusive calls. 107 00:20:33,670 --> 00:20:37,890 Now, they take up their hunting positions. 108 00:20:44,520 --> 00:20:46,700 even though they can't see each other. 109 00:21:08,560 --> 00:21:10,300 With the deer surrounded, 110 00:21:12,460 --> 00:21:14,880 The doles wait for the signal to attack. 111 00:21:35,600 --> 00:21:38,380 Some of the doles spit the herd. 112 00:21:42,670 --> 00:21:46,490 and drive a stag towards others waiting in ambush. 113 00:22:20,040 --> 00:22:25,920 The dole's ability to communicate so quietly enables them to stay connected 114 00:22:25,920 --> 00:22:29,440 so hunt successfully in the tangle of their jungle. 115 00:22:49,680 --> 00:22:53,060 the mountainous forests of central China. 116 00:22:56,340 --> 00:23:01,380 Until recently, these were among the least known of forests. 117 00:23:04,320 --> 00:23:11,040 They're full of swirling mists and few outsiders had any idea of what they 118 00:23:11,040 --> 00:23:12,040 contain. 119 00:23:18,220 --> 00:23:23,160 Living in such dense vegetation, it's difficult to make yourself seen. 120 00:23:24,840 --> 00:23:26,620 Even when you want to be. 121 00:23:28,540 --> 00:23:32,600 And that's a problem for this male Chemex tragopan. 122 00:23:34,460 --> 00:23:37,140 He has lived most of his life alone. 123 00:23:40,460 --> 00:23:43,600 And this is his first mating season. 124 00:23:47,820 --> 00:23:52,000 He needs to make himself conspicuous in the gloom of the forest floor. 125 00:23:52,920 --> 00:23:56,140 And he's found a clearing where he might do so. 126 00:24:00,200 --> 00:24:01,200 A female. 127 00:24:12,900 --> 00:24:15,240 She too is looking for a mate. 128 00:24:18,920 --> 00:24:20,560 This could be his moment. 129 00:24:58,280 --> 00:25:00,380 And who is this? 130 00:25:02,900 --> 00:25:05,440 A male golden pheasant. 131 00:25:08,140 --> 00:25:14,000 He too has come to this clearing to attract a female. 132 00:25:21,840 --> 00:25:23,400 Seems a little more confident. 133 00:25:52,620 --> 00:25:57,660 That is how it's done The 134 00:25:57,660 --> 00:26:04,580 dragopan might still have a chance here is a 135 00:26:04,580 --> 00:26:09,380 new female But is she interested 136 00:26:09,380 --> 00:26:18,000 It's 137 00:26:18,000 --> 00:26:19,000 time to be bold 138 00:26:30,600 --> 00:26:34,780 He bumps up a pair of horns and a multicolored bib. 139 00:26:38,840 --> 00:26:40,660 It's a sight to be wondered at. 140 00:26:46,280 --> 00:26:49,520 And it has never before been filmed in the wild. 141 00:27:27,690 --> 00:27:28,750 Not today. 142 00:27:31,050 --> 00:27:33,050 How deflating. 143 00:27:49,710 --> 00:27:54,110 The temperate rainforests of Western Canada. 144 00:27:59,370 --> 00:28:02,870 Some of the trees here are a thousand years old. 145 00:28:21,610 --> 00:28:27,870 It's autumn, and the beginning of a spectacle that each year transforms this 146 00:28:27,870 --> 00:28:30,320 forest. and all that lives in it. 147 00:28:39,320 --> 00:28:45,540 After years at sea, thousands of Pacific salmon are returning to these streams 148 00:28:45,540 --> 00:28:46,540 to breed. 149 00:28:54,890 --> 00:28:58,170 and they attract the forest's rarest resident. 150 00:29:17,410 --> 00:29:19,470 A spirit bear. 151 00:29:23,180 --> 00:29:25,540 A white variant of the black bear. 152 00:29:37,280 --> 00:29:42,300 Fewer than 150 exist, and they're found only here. 153 00:29:52,240 --> 00:29:57,140 This female has fished for salmon here for 20 years. 154 00:30:26,160 --> 00:30:27,160 timing right. 155 00:30:30,140 --> 00:30:32,140 And there can be great rewards. 156 00:30:40,040 --> 00:30:46,020 In her youth, she was in fact even more successful than the black bears. 157 00:30:53,460 --> 00:30:55,180 Perhaps her pale coat. 158 00:30:55,610 --> 00:31:00,530 makes it difficult for the fish to see her against the bright sky, and that 159 00:31:00,530 --> 00:31:01,950 could give her an advantage. 160 00:31:07,810 --> 00:31:14,630 But now she is old, and this year she's finding it 161 00:31:14,630 --> 00:31:15,630 hard. 162 00:31:42,960 --> 00:31:47,020 Her fishing skills, however, haven't totally deserted her. 163 00:31:51,700 --> 00:31:57,100 This annual feast helps her to fadden ready for the winter ahead. 164 00:32:02,620 --> 00:32:06,700 But it also helps the patch of forest where she lives. 165 00:32:09,520 --> 00:32:13,720 This female has an unusual relationship with the forest. 166 00:32:18,120 --> 00:32:24,540 Every fish carcass she leaves behind decays, releasing nutrients 167 00:32:24,540 --> 00:32:26,360 that soak into the soil. 168 00:32:31,680 --> 00:32:37,420 And there they are collected. 169 00:32:38,270 --> 00:32:40,310 by a network of fungi. 170 00:32:55,490 --> 00:33:01,770 The threads attach themselves to the tree's roots and 171 00:33:01,770 --> 00:33:08,650 nutrients from the fish collected by the fungi are then passed on 172 00:33:08,650 --> 00:33:09,650 to the trees. 173 00:33:11,890 --> 00:33:17,290 As a consequence the forest around the river grows three times faster than 174 00:33:17,290 --> 00:33:18,290 elsewhere. 175 00:33:27,630 --> 00:33:32,870 And some trees here become as tall as any in the world. 176 00:33:42,160 --> 00:33:46,020 and provide spirit bears with a healthy forest home. 177 00:34:03,000 --> 00:34:09,080 We now know that such relationships exist in forests all over the world. 178 00:34:20,969 --> 00:34:25,130 It started life as a seed some 200 years ago. 179 00:34:28,389 --> 00:34:34,969 Now it towers 60 metres above the forest floor and 180 00:34:34,969 --> 00:34:41,429 transports 1 ,000 litres of nutrient -filled water from its roots 181 00:34:41,429 --> 00:34:45,190 up to its canopy every day. 182 00:34:52,110 --> 00:34:55,530 So this giant gives life to others. 183 00:35:05,230 --> 00:35:11,590 A whole community of animals and plants depends on the well -being of this one 184 00:35:11,590 --> 00:35:12,590 tree. 185 00:35:58,090 --> 00:36:04,210 A single cut, made in just a few moments, has broken thousands of long 186 00:36:04,210 --> 00:36:05,310 -established connections. 187 00:36:15,390 --> 00:36:21,710 Across the world's forests, this story is being repeated endlessly. 188 00:36:36,590 --> 00:36:42,130 15 billion trees are cut down every year. 189 00:36:52,950 --> 00:36:58,510 Every one of these trees is in itself an intricate ecosystem. 190 00:37:12,780 --> 00:37:18,160 But here in the Amazon, they're being replaced by plantations of a single 191 00:37:18,160 --> 00:37:19,600 species of tree. 192 00:37:29,380 --> 00:37:36,060 Originally from Australia, these eucalypts are unable to build 193 00:37:36,060 --> 00:37:39,500 relationships with most of the native plants and animals. 194 00:37:47,790 --> 00:37:54,430 And worse, these newcomers grow so rapidly, they extract nutrients from the 195 00:37:54,430 --> 00:37:57,030 faster than they can be replaced. 196 00:38:06,010 --> 00:38:09,730 And what was once a rich and complex world 197 00:38:09,730 --> 00:38:16,630 becomes little more than a green desert. 198 00:38:52,010 --> 00:38:57,610 And at just five years of age, their lives are ended. 199 00:39:00,170 --> 00:39:03,490 They're felled and taken away. 200 00:39:14,470 --> 00:39:19,390 Their wood is then pulped to make paper. 201 00:39:31,880 --> 00:39:37,840 And all that remains of the rich rainforest are a few tiny patches. 202 00:39:47,820 --> 00:39:54,660 Patches so small that few of the original inhabitants are able to survive 203 00:39:54,660 --> 00:39:55,660 them. 204 00:40:03,820 --> 00:40:05,980 Uganda, East Africa 205 00:40:05,980 --> 00:40:15,820 This 206 00:40:15,820 --> 00:40:22,640 small group of chimpanzees have a detailed 207 00:40:22,640 --> 00:40:27,180 knowledge of the forest territory that they inherited from previous 208 00:40:38,600 --> 00:40:43,400 They know the best places to shelter, to raise their young, 209 00:40:43,580 --> 00:40:48,100 and to feed. 210 00:41:08,490 --> 00:41:15,250 This fruiting tree cannot by itself sustain the chimps for 211 00:41:15,250 --> 00:41:16,250 long. 212 00:41:33,430 --> 00:41:38,300 The alpha male signals that it's time to move on. 213 00:41:44,280 --> 00:41:47,300 Where he goes, others will follow. 214 00:42:06,320 --> 00:42:13,180 He leads them not to another fruiting tree, but into 215 00:42:13,180 --> 00:42:14,860 a new world. 216 00:42:35,560 --> 00:42:40,820 This road, only recently built, has cut through their territory. 217 00:42:50,880 --> 00:42:53,220 The alpha male is cautious. 218 00:43:02,410 --> 00:43:05,170 His own mother was killed on this road 219 00:43:05,170 --> 00:43:23,430 He 220 00:43:23,430 --> 00:43:30,410 makes sure it's clear before 221 00:43:30,410 --> 00:43:33,470 crossing with the slower members of his family. 222 00:43:53,030 --> 00:43:55,570 If the group is to get what they need, 223 00:44:00,170 --> 00:44:05,530 They will have to go against their natural instincts and 224 00:44:05,530 --> 00:44:08,690 approach humans. 225 00:44:38,030 --> 00:44:40,930 But their new neighbors are friendly. 226 00:44:47,010 --> 00:44:50,570 And they allow the chimps to collect 227 00:44:50,570 --> 00:44:57,530 jackfruit, the largest of all tree 228 00:44:57,530 --> 00:44:58,530 fruits. 229 00:45:05,100 --> 00:45:08,760 Jackfruit grow all year round in people's gardens. 230 00:45:22,580 --> 00:45:28,340 And they're more nutritious than the limited amount of wild food the chimps 231 00:45:28,340 --> 00:45:31,540 now find in what remains of their forest. 232 00:45:44,240 --> 00:45:49,700 But this is a new world and a new relationship. 233 00:45:54,980 --> 00:45:58,120 New boundaries need to be established. 234 00:46:01,500 --> 00:46:06,840 Some of the chimps start to help themselves to people's crops. 235 00:46:40,720 --> 00:46:45,660 They have outstayed their welcome, and the alpha male decides that it's time to 236 00:46:45,660 --> 00:46:46,660 leave. 237 00:47:05,800 --> 00:47:10,080 The chimps make this dangerous journey, 238 00:47:29,019 --> 00:47:35,280 But these highly intelligent animals, our closest living relatives, have 239 00:47:35,280 --> 00:47:39,520 managed, just about, to carve out a place for themselves. 240 00:47:40,220 --> 00:47:41,720 in this changing world. 241 00:47:47,960 --> 00:47:52,720 Animals have maintained a long -established relationship with forests. 242 00:47:57,540 --> 00:48:04,340 But as we continue to break our connections with them, the question is 243 00:48:04,340 --> 00:48:06,600 for how much longer will they survive? 244 00:48:09,870 --> 00:48:13,870 Surely the time has come to rebuild them. 245 00:48:32,270 --> 00:48:39,220 Over many years, I've been 246 00:48:39,220 --> 00:48:44,080 lucky enough to watch chimps in their natural home, such as here in the thick 247 00:48:44,080 --> 00:48:45,340 forests of West Africa. 248 00:48:47,520 --> 00:48:51,640 Chimpanzees. A peaceful scene of jungle harmony. 249 00:48:53,200 --> 00:48:57,440 The experienced male is sitting right there. 250 00:48:58,860 --> 00:49:03,480 But the lives of many chimpanzees are now changing dramatically. 251 00:49:20,040 --> 00:49:26,280 Here in Uganda, over the last decade, they have lost over 80 % of their forest 252 00:49:26,280 --> 00:49:27,280 home. 253 00:49:34,320 --> 00:49:37,480 They don't live in a protected area. 254 00:49:40,220 --> 00:49:46,200 To survive here, they have to live alongside the 200 or so human families 255 00:49:46,200 --> 00:49:48,060 who farm here. 256 00:50:04,639 --> 00:50:10,940 To tell the story of this remarkable chimp group, the Planet Earth team are 257 00:50:10,940 --> 00:50:12,320 working with these residents. 258 00:50:19,120 --> 00:50:20,160 Who was that, Tom? 259 00:50:20,360 --> 00:50:21,880 This one was Arad. 260 00:50:24,360 --> 00:50:28,820 Tom is part of the Burundi Chimpanzee and Community Project. 261 00:50:31,260 --> 00:50:37,900 He's been studying the chimps every day for the last 15 years and has 262 00:50:37,900 --> 00:50:39,700 seen the change firsthand. 263 00:50:41,480 --> 00:50:43,020 Very many things have changed. 264 00:50:43,360 --> 00:50:47,160 When chimpanzees were seeing people, they would run. 265 00:50:47,660 --> 00:50:51,240 Run very quickly and go. But now they just stand. 266 00:50:51,680 --> 00:50:55,500 Because everywhere they go, they find a pathway. 267 00:50:58,740 --> 00:51:01,600 Chips are normally tricky to film in the wild. 268 00:51:02,720 --> 00:51:08,760 But in this human world, the crew are surprised by how easy it is to approach 269 00:51:08,760 --> 00:51:09,760 them. 270 00:51:12,600 --> 00:51:13,900 Another one coming up, Park. 271 00:51:18,670 --> 00:51:21,770 But back in the forest, it's a different story. 272 00:51:25,750 --> 00:51:29,310 Here the chimps seem wary of the newcomers. 273 00:51:48,240 --> 00:51:54,540 All the crew get to see is a lot of bottoms. 274 00:51:57,100 --> 00:52:01,660 This afternoon, the chimps have been taking us on a wild goose chase. 275 00:52:01,940 --> 00:52:06,580 They've crossed the river, and then they've crossed back, gone past us while 276 00:52:06,580 --> 00:52:09,540 were in the woods, and then now they've disappeared again. 277 00:52:11,440 --> 00:52:16,180 When we don't have chimps, we film goats. 278 00:52:24,430 --> 00:52:29,750 Here in the chimp's forest home, it's going to take time to earn the group's 279 00:52:29,750 --> 00:52:30,750 trust. 280 00:52:33,530 --> 00:52:34,970 I think it's time to move this. 281 00:52:36,330 --> 00:52:38,370 And get to know one another. 282 00:52:38,630 --> 00:52:39,670 This is Jack. 283 00:52:41,790 --> 00:52:45,330 After two weeks, things are improving on the ground. 284 00:52:47,270 --> 00:52:50,790 But what will the chimps think of the crew up in the trees? 285 00:52:55,920 --> 00:52:58,740 You can see a bunch of chimp faces looking up at me. 286 00:52:59,260 --> 00:53:03,000 This is a new experience for them. I doubt they've ever seen a human in a 287 00:53:03,000 --> 00:53:04,000 before. 288 00:53:04,740 --> 00:53:06,600 So hopefully they accept me. 289 00:53:32,620 --> 00:53:33,800 to hours of waiting. 290 00:53:35,580 --> 00:53:36,580 Success. 291 00:53:40,580 --> 00:53:44,580 All the chimps that were on the ground looking up at me are now happily in the 292 00:53:44,580 --> 00:53:47,820 tree, which is a really good sign that they've accepted me. 293 00:53:49,960 --> 00:53:53,500 It's the first time that I've been able to see at their level while they're 294 00:53:53,500 --> 00:53:54,500 feeding. 295 00:54:15,370 --> 00:54:19,910 For the crew, it has taken a long time to gain the chimps' acceptance. 296 00:54:21,690 --> 00:54:26,930 But in fact, the chimps here have shown that they can respond quickly to the 297 00:54:26,930 --> 00:54:27,930 presence of people. 298 00:54:30,750 --> 00:54:33,650 Chimpanzees are highly intelligent. 299 00:54:34,030 --> 00:54:39,190 If you cut down the forest, well, chimps will start eating human crops. 300 00:54:39,510 --> 00:54:44,670 If you divide their range up with roads and, you know... 301 00:54:44,960 --> 00:54:47,800 The chimps will end up just learning to cross the roads. 302 00:54:50,360 --> 00:54:54,140 The animals can adapt to an increasingly human environment. 303 00:54:54,340 --> 00:54:58,560 The question is, can people accommodate an animal like a chimp? 304 00:55:09,860 --> 00:55:11,080 Chimpanzees can be dangerous. 305 00:55:14,540 --> 00:55:17,880 Living alongside them is a mixed experience. 306 00:55:28,440 --> 00:55:35,140 The local community 307 00:55:35,140 --> 00:55:40,160 and the project have been working together to try to decrease the impact 308 00:55:40,160 --> 00:55:41,160 these problems. 309 00:55:47,000 --> 00:55:52,920 Over the last eight years, Lillian and her family have planted native seedlings 310 00:55:52,920 --> 00:55:56,720 on her land and left her patch of forest to regrow. 311 00:55:57,760 --> 00:56:00,480 If we cut it, they come and sleep in our houses. 312 00:56:01,280 --> 00:56:03,140 So we should leave that place for them. 313 00:56:06,660 --> 00:56:11,800 If you leave them and you don't disturb them, they are peaceful animals. 314 00:56:17,480 --> 00:56:23,200 With other residents following suit, more of the forest is showing positive 315 00:56:23,200 --> 00:56:24,900 signs of return. 316 00:56:28,860 --> 00:56:35,180 There is a long way to go, and the future for these chimps remains 317 00:56:38,700 --> 00:56:44,600 But where peaceful coexistence can be built, there is hope. 318 00:57:27,400 --> 00:57:32,080 harshest conditions that exist on planet Earth. 319 00:57:39,360 --> 00:57:44,200 Extraordinary places inhabited by some of Earth's most resilient species. 320 00:57:45,760 --> 00:57:48,820 This is Planet Earth 3.