1 00:00:01,360 --> 00:00:02,880 Viewers like you make this program possible. 2 00:00:03,000 --> 00:00:05,400 Support your local PBS station. 3 00:00:12,400 --> 00:00:14,440 All around the planet, 4 00:00:14,560 --> 00:00:17,120 billions of animals are on the move... 5 00:00:20,040 --> 00:00:22,840 ...making incredible journeys. 6 00:00:25,160 --> 00:00:27,920 The most amazing of these... 7 00:00:28,040 --> 00:00:29,680 are the smallest. 8 00:00:33,400 --> 00:00:36,920 This series uses the latest camera technology 9 00:00:37,040 --> 00:00:39,520 to follow six tiny animals 10 00:00:39,640 --> 00:00:43,720 on the biggest adventures of their lives 11 00:00:43,840 --> 00:00:47,280 as they travel through extraordinary landscapes... 12 00:00:57,040 --> 00:01:00,840 ...where every little step counts. 13 00:01:18,640 --> 00:01:23,040 The greatest adventures are the smallest. 14 00:01:48,720 --> 00:01:50,840 This painted turtle hatchling 15 00:01:50,960 --> 00:01:53,280 is the size of a walnut. 16 00:01:58,160 --> 00:02:01,400 Her nest, in Algonquin, Canada, 17 00:02:01,520 --> 00:02:06,520 has been in the perfect place for incubation. 18 00:02:06,640 --> 00:02:11,720 Made of loose, sandy soil, and bathed in sunshine, 19 00:02:11,840 --> 00:02:14,600 it has kept her safe for three months. 20 00:02:19,160 --> 00:02:21,800 But now she must leave 21 00:02:21,920 --> 00:02:25,840 on a mission to find a lake she can call home... 22 00:02:28,080 --> 00:02:30,440 ...unaware of what lies ahead. 23 00:02:41,840 --> 00:02:46,240 Only 1% of hatchlings will make it to adulthood, 24 00:02:46,360 --> 00:02:49,760 so her destiny is far from certain... 25 00:02:56,240 --> 00:03:01,360 It is autumn, and nighttime temperatures are unpredictable, 26 00:03:01,480 --> 00:03:07,280 so she must make it to water in just eight hours. 27 00:03:07,400 --> 00:03:09,800 Because if there is a frost, 28 00:03:09,920 --> 00:03:13,000 the rapid drop in temperature will kill her. 29 00:03:15,840 --> 00:03:19,920 For most hatchlings, eight hours is plenty of time. 30 00:03:22,480 --> 00:03:25,200 But her mother selected an unconventional spot 31 00:03:25,320 --> 00:03:26,720 to nest in... 32 00:03:39,960 --> 00:03:43,640 ...the roadside verge of Highway 60. 33 00:03:47,040 --> 00:03:51,120 Built in 1936, it transects the southern portion 34 00:03:51,240 --> 00:03:54,160 of Algonquin Provincial Park. 35 00:03:54,280 --> 00:03:57,680 The sandy roadside edges have become favored sites 36 00:03:57,800 --> 00:03:59,480 for nesting turtles. 37 00:04:03,600 --> 00:04:07,680 But it puts this newly-emerged hatchling in mortal danger 38 00:04:07,800 --> 00:04:11,720 as she tries to reach the lake. 39 00:04:11,840 --> 00:04:15,520 Instinctively, she heads for the horizon. 40 00:04:22,360 --> 00:04:25,320 Turtles are hardwired to associate horizons 41 00:04:25,440 --> 00:04:27,320 with the presence of water. 42 00:04:34,280 --> 00:04:39,040 Here, it takes her on a direct path up to the road. 43 00:04:41,160 --> 00:04:44,440 It's not just the traffic she needs to worry about. 44 00:04:49,080 --> 00:04:53,560 Predators patrol the highway searching for an easy meal. 45 00:05:10,120 --> 00:05:12,600 Her body is adapted for swimming, 46 00:05:12,720 --> 00:05:14,240 not climbing, 47 00:05:14,360 --> 00:05:17,760 with webbed feet too tiny to grip the gravel. 48 00:05:21,320 --> 00:05:25,080 All the slipping and sliding wastes valuable time. 49 00:05:29,240 --> 00:05:30,960 A red fox... 50 00:05:41,520 --> 00:05:44,840 Instinct kicks in, and she freezes. 51 00:05:56,200 --> 00:05:58,960 She is camouflaged amongst the pebbles. 52 00:06:16,880 --> 00:06:20,160 The forest lies thirty feet ahead of her... 53 00:06:32,400 --> 00:06:35,760 ...the equivalent of half a mile for a human. 54 00:06:47,120 --> 00:06:50,320 Out here, there's no hiding. 55 00:06:54,360 --> 00:06:57,880 On this flat ground she can travel much quicker, 56 00:06:58,000 --> 00:07:00,240 at a quarter of a mile an hour. 57 00:07:05,000 --> 00:07:08,360 But with vehicles traveling at 50 miles an hour... 58 00:07:10,560 --> 00:07:13,040 ...the odds are stacked against her. 59 00:07:57,600 --> 00:07:59,960 One lane down... 60 00:08:02,160 --> 00:08:04,480 ...one more to go. 61 00:08:11,520 --> 00:08:13,920 More trouble... 62 00:08:17,440 --> 00:08:18,920 ...a raven. 63 00:08:28,720 --> 00:08:32,240 These intelligent predators have a keen eye. 64 00:09:12,120 --> 00:09:15,680 Saved by a truck. 65 00:09:15,800 --> 00:09:19,720 Sometimes, being little pays off. 66 00:09:27,560 --> 00:09:30,800 Most hatchlings don't make it this far. 67 00:09:34,520 --> 00:09:37,360 Having succeeded against the odds, 68 00:09:37,480 --> 00:09:41,240 she is about to enter a completely different world. 69 00:09:48,440 --> 00:09:52,080 8,000 miles away, in South Africa, 70 00:09:52,200 --> 00:09:55,720 the sun is setting over a vast acacia forest. 71 00:09:58,440 --> 00:10:02,200 An old tree hollow is home to a family of pint-sized 72 00:10:02,320 --> 00:10:07,760 nocturnal primates-- mohol bushbabies. 73 00:10:15,640 --> 00:10:19,480 This 10-month-old male is waking up alongside his mom 74 00:10:19,600 --> 00:10:22,200 and twin sister. 75 00:10:22,320 --> 00:10:25,480 They will soon set off to scour their territory 76 00:10:25,600 --> 00:10:30,000 on the hunt for insects. 77 00:10:30,120 --> 00:10:33,440 But it is winter, and with the colder, 78 00:10:33,560 --> 00:10:37,200 drier weather, food is becoming scarce. 79 00:10:41,640 --> 00:10:44,400 His mom is also pregnant, 80 00:10:44,520 --> 00:10:47,560 more than likely with twins again. 81 00:10:53,120 --> 00:10:55,440 With more mouths to feed, 82 00:10:55,560 --> 00:10:58,280 the territory cannot support them all. 83 00:11:03,320 --> 00:11:07,920 Having done all that she can, and with no other option, 84 00:11:08,040 --> 00:11:09,760 his mother turns on him... 85 00:11:18,480 --> 00:11:20,280 ...driving him away. 86 00:11:24,160 --> 00:11:29,680 Now all alone, he must find a new home before he starves. 87 00:11:33,560 --> 00:11:36,840 He needs around 200 unclaimed acacia trees 88 00:11:36,960 --> 00:11:38,960 to create his own territory. 89 00:11:49,720 --> 00:11:54,680 But first, he must find food to fuel his journey. 90 00:12:00,920 --> 00:12:03,080 He has learned from his mother where to find 91 00:12:03,200 --> 00:12:07,160 an important winter food-- acacia gum. 92 00:12:09,240 --> 00:12:14,120 A large and reliable source can be found half a mile away. 93 00:12:14,240 --> 00:12:18,800 He must navigate through the dense forest to get there. 94 00:12:18,920 --> 00:12:21,320 As he goes, he uses another skill 95 00:12:21,440 --> 00:12:23,680 he learned from his mother-- 96 00:12:23,800 --> 00:12:27,080 to pee on his hands. 97 00:12:27,200 --> 00:12:29,800 It is a way of scent marking, 98 00:12:29,920 --> 00:12:33,520 and the super sticky urine gives him grip. 99 00:12:41,960 --> 00:12:44,240 A special membrane at the back of his eye 100 00:12:44,360 --> 00:12:46,880 reflects and amplifies the moonlight, 101 00:12:47,000 --> 00:12:49,880 helping him find his way in the dark. 102 00:13:01,560 --> 00:13:04,000 He makes fast progress. 103 00:13:07,400 --> 00:13:10,360 Bushbaby hind legs are super-powered, 104 00:13:10,480 --> 00:13:11,520 with stretchy tendons 105 00:13:11,640 --> 00:13:13,720 and extra-large muscles. 106 00:13:16,920 --> 00:13:21,600 They catapult him from tree to tree at six feet a second. 107 00:13:30,440 --> 00:13:33,040 He's nearly made it to the acacia gum. 108 00:13:38,320 --> 00:13:43,040 But after the moon sets, his vision is limited. 109 00:13:50,400 --> 00:13:54,120 It is risky to keep going when he can't see. 110 00:14:03,920 --> 00:14:05,240 His hearing is now 111 00:14:05,360 --> 00:14:09,480 all he has to keep himself safe from predators. 112 00:14:12,240 --> 00:14:15,520 Bushbabies hear higher frequencies than humans, 113 00:14:15,640 --> 00:14:17,680 a range that is perfectly attuned 114 00:14:17,800 --> 00:14:20,360 to detecting noises in the forest. 115 00:14:32,720 --> 00:14:36,280 His enormous ears respond to every sound... 116 00:14:38,880 --> 00:14:40,560 ...every creak... 117 00:14:44,720 --> 00:14:48,000 ...as he tries to work out who is friend... 118 00:14:50,400 --> 00:14:51,800 ...who is foe... 119 00:14:54,440 --> 00:14:56,800 ...and what is food. 120 00:15:02,000 --> 00:15:08,320 The coast appears to be clear, and food is just one jump away. 121 00:15:12,200 --> 00:15:17,600 Acacia gum is formed when a tree is cut or damaged, 122 00:15:17,720 --> 00:15:21,520 as it releases sap to seal the wound. 123 00:15:21,640 --> 00:15:23,960 It is a vital food source for bushbabies 124 00:15:24,080 --> 00:15:26,080 during the winter months, 125 00:15:26,200 --> 00:15:30,840 but it only provides ten calories per ounce. 126 00:15:30,960 --> 00:15:32,960 He must lick a lot if he is to replenish 127 00:15:33,080 --> 00:15:35,400 his dwindling energy levels. 128 00:15:40,520 --> 00:15:43,480 He is distracted enough to let his guard down. 129 00:15:48,040 --> 00:15:53,520 Not wise when danger lurks in the shadows... 130 00:16:03,640 --> 00:16:10,560 Back in Canada, the hatchling has made it across the road, 131 00:16:10,680 --> 00:16:14,160 But she has entered a completely new environment. 132 00:16:16,440 --> 00:16:20,640 An ancient, deciduous forest lies between her and the lake. 133 00:16:28,400 --> 00:16:31,360 With only six hours of daylight remaining, 134 00:16:31,480 --> 00:16:35,240 it's a huge task to make it to the lake by nightfall. 135 00:16:41,680 --> 00:16:48,520 Beech, maple, and pine trees tower 150 feet above her. 136 00:17:00,400 --> 00:17:03,680 Her minute body, with its cumbersome shell, 137 00:17:03,800 --> 00:17:06,520 isn't adapted for this assault course. 138 00:17:10,600 --> 00:17:13,080 But she is resilient. 139 00:17:13,200 --> 00:17:15,360 Every time she falls over, 140 00:17:15,480 --> 00:17:19,640 she uses her head to flip herself back. 141 00:17:19,760 --> 00:17:23,120 Like her, the animals here have their own challenges 142 00:17:23,240 --> 00:17:27,040 before winter sets in. 143 00:17:27,160 --> 00:17:30,560 A pileated woodpecker feasts on as many Medeola berries 144 00:17:30,680 --> 00:17:35,080 as it can before they become buried by snow. 145 00:17:58,880 --> 00:18:02,920 And chipmunks must stash up to 150 nuts a day 146 00:18:03,040 --> 00:18:07,120 to feed on through the winter months. 147 00:18:07,240 --> 00:18:10,760 But the little turtle won't need to eat until Spring. 148 00:18:13,040 --> 00:18:15,240 She is fueled by the yolk she fed upon 149 00:18:15,360 --> 00:18:17,760 when she was still inside her egg. 150 00:18:26,720 --> 00:18:29,440 Although she might not be hungry, 151 00:18:29,560 --> 00:18:32,000 she is at risk of being eaten. 152 00:18:35,720 --> 00:18:39,240 There are plenty of predators here who would snatch her up. 153 00:18:45,480 --> 00:18:48,120 So the quicker she can get through the forest, 154 00:18:48,240 --> 00:18:49,720 the better. 155 00:18:54,840 --> 00:18:56,880 Navigating the forest floor 156 00:18:57,000 --> 00:19:00,200 is much harder with no obvious horizon. 157 00:19:05,800 --> 00:19:08,760 If she could just get a little higher, 158 00:19:08,880 --> 00:19:11,040 she might get a better view. 159 00:19:15,480 --> 00:19:21,280 Digging in with her claws, she hauls herself to the top. 160 00:19:37,280 --> 00:19:42,200 After getting her bearings, she begins the descent-- 161 00:19:42,320 --> 00:19:45,480 not as easy to control. 162 00:19:51,200 --> 00:19:52,600 Water... 163 00:19:52,720 --> 00:19:54,360 at last... 164 00:19:57,440 --> 00:20:00,120 ...in a black bear's paw print. 165 00:20:04,320 --> 00:20:07,200 It gives her skin a welcome refresh, 166 00:20:07,320 --> 00:20:11,400 but it's no substitute for the lake. 167 00:20:11,520 --> 00:20:13,800 She must keep moving. 168 00:20:22,800 --> 00:20:25,880 Time is still her biggest enemy. 169 00:20:30,160 --> 00:20:31,640 Minutes... 170 00:20:31,760 --> 00:20:33,120 then hours... 171 00:20:33,240 --> 00:20:34,720 tick by. 172 00:20:40,600 --> 00:20:47,040 The woods at night are no place for a tiny turtle. 173 00:20:47,160 --> 00:20:50,480 She risks freezing to death or being attacked 174 00:20:50,600 --> 00:20:52,480 by nocturnal predators. 175 00:20:55,120 --> 00:21:00,320 It is vital she makes it to the lake by sunset. 176 00:21:00,440 --> 00:21:04,520 But nightfall is still one hour away... 177 00:21:04,640 --> 00:21:08,160 and the lake is nowhere to be seen. 178 00:21:14,520 --> 00:21:18,120 Under a starlit sky in South Africa... 179 00:21:23,080 --> 00:21:26,400 The young male bushbaby is only half a mile 180 00:21:26,520 --> 00:21:30,440 into his journey for a new home, 181 00:21:30,560 --> 00:21:35,320 but distracted by food, he's left himself open to attack. 182 00:21:40,320 --> 00:21:44,760 In these forests, for one so small, 183 00:21:44,880 --> 00:21:47,920 danger lurks around every corner. 184 00:21:56,760 --> 00:21:59,480 His scent has been picked up by a genet... 185 00:22:04,520 --> 00:22:07,880 ...one of the few predators adept enough in the trees, 186 00:22:08,000 --> 00:22:10,040 to catch a bushbaby. 187 00:22:15,000 --> 00:22:18,560 Its flexible, slender body allows it to creep 188 00:22:18,680 --> 00:22:20,720 closer to its prey. 189 00:23:03,800 --> 00:23:07,200 Its tail provides vital balance. 190 00:23:14,840 --> 00:23:17,840 If it gets within striking distance, 191 00:23:17,960 --> 00:23:21,120 it can kill with a single bite to the neck. 192 00:23:37,800 --> 00:23:40,800 But it makes one tiny slip... 193 00:23:54,000 --> 00:23:57,160 Saved by a super-powered jump. 194 00:24:02,000 --> 00:24:04,880 Using stored energy in his tendons, 195 00:24:05,000 --> 00:24:08,800 the bushbaby leaps 30 times his body length. 196 00:24:14,240 --> 00:24:17,800 His rapid response has saved his life... 197 00:24:21,440 --> 00:24:25,760 But he's now in a completely unfamiliar part of the forest. 198 00:24:42,000 --> 00:24:44,760 An eerie glow in the distance... 199 00:24:48,120 --> 00:24:51,840 and the unmistakable buzz of insects. 200 00:24:56,640 --> 00:25:00,320 A light outside a remote bush lodge... 201 00:25:02,800 --> 00:25:07,200 surrounded by his favorite food. 202 00:25:07,320 --> 00:25:09,640 It draws him closer. 203 00:25:15,960 --> 00:25:20,440 Being a nocturnal animal, he is wary of the light... 204 00:25:25,200 --> 00:25:29,720 But in winter, with insects harder to find, 205 00:25:29,840 --> 00:25:33,160 this is a unique opportunity for the bushbaby. 206 00:25:39,720 --> 00:25:41,920 Hunger drives him on. 207 00:26:21,360 --> 00:26:24,360 Moths not only provide the bushbaby with twice 208 00:26:24,480 --> 00:26:27,240 as many calories as acacia gum... 209 00:26:29,800 --> 00:26:35,200 ...but also valuable protein to build and maintain his muscles. 210 00:26:39,040 --> 00:26:42,600 The human world has given him an opportunity, 211 00:26:42,720 --> 00:26:45,840 but it also brings new dangers... 212 00:26:48,520 --> 00:26:51,680 Domestic dogs can kill bushbabies. 213 00:26:56,200 --> 00:26:59,280 It is too risky for him to stay here. 214 00:27:14,680 --> 00:27:17,720 But with sunrise rapidly approaching, 215 00:27:17,840 --> 00:27:20,560 he needs to find somewhere to sleep. 216 00:27:29,040 --> 00:27:32,720 He spies a box. 217 00:27:32,840 --> 00:27:35,080 It's out of the ordinary, 218 00:27:35,200 --> 00:27:38,400 but perhaps this could be his new home. 219 00:28:01,160 --> 00:28:03,680 Dawn reveals the occupants... 220 00:28:08,280 --> 00:28:10,960 ...a yellow-billed hornbill family. 221 00:28:13,280 --> 00:28:17,760 The mother is sealed inside with the newly hatched chicks... 222 00:28:25,040 --> 00:28:27,040 ...while her mate dutifully brings them food 223 00:28:27,160 --> 00:28:28,960 numerous times a day. 224 00:28:39,280 --> 00:28:43,120 Bedded down in a makeshift tree hole, 225 00:28:43,240 --> 00:28:46,600 it's not quite the new home the bushbaby is after. 226 00:28:48,840 --> 00:28:52,920 He will have to resume his search when night falls. 227 00:29:01,360 --> 00:29:02,680 The turtle hatchling 228 00:29:02,800 --> 00:29:06,080 is three quarters of a mile into the forest... 229 00:29:14,280 --> 00:29:16,760 ...struggling through the leaf litter... 230 00:29:26,880 --> 00:29:29,640 ...with no sign of the lake yet. 231 00:29:31,760 --> 00:29:35,320 Eight hours since she left her roadside nest, 232 00:29:35,440 --> 00:29:39,360 and the sun is now setting. 233 00:29:39,480 --> 00:29:43,840 And without its warmth, the temperature rapidly drops, 234 00:29:43,960 --> 00:29:48,360 and her pace slows. 235 00:29:48,480 --> 00:29:50,480 She is out of time. 236 00:29:54,640 --> 00:29:58,120 The sharp autumn frost could kill her... 237 00:30:00,200 --> 00:30:03,880 ...if the nocturnal predators don't sniff her out first. 238 00:30:09,640 --> 00:30:14,120 At 50 degrees, her body temperature is dangerously low. 239 00:30:16,400 --> 00:30:18,480 Instinct kicks in... 240 00:30:18,600 --> 00:30:22,480 and she buries herself. 241 00:30:22,600 --> 00:30:25,160 Using the leaf litter as a blanket 242 00:30:25,280 --> 00:30:27,680 will keep her a few degrees warmer 243 00:30:27,800 --> 00:30:31,400 and hide her from predators. 244 00:30:31,520 --> 00:30:34,560 It is her best chance of surviving the night. 245 00:31:36,720 --> 00:31:38,200 A raccoon. 246 00:31:40,880 --> 00:31:44,240 With dexterous paws, it is skilled at finding food 247 00:31:44,360 --> 00:31:45,960 amongst the leaf litter. 248 00:31:55,440 --> 00:32:00,000 Being an omnivore, it isn't fussy about what it eats. 249 00:32:00,120 --> 00:32:03,680 It just needs to pile on the pounds ahead of winter. 250 00:32:06,680 --> 00:32:10,320 A turtle hatchling would be a welcome find... 251 00:32:25,000 --> 00:32:29,480 ...but nuts are a great alternative source of protein. 252 00:32:33,480 --> 00:32:37,320 The hatchling is safe... 253 00:32:37,440 --> 00:32:38,920 for now. 254 00:32:51,200 --> 00:32:54,000 Dawn in South Africa. 255 00:32:54,120 --> 00:32:56,720 The bushbaby has travelled across six miles 256 00:32:56,840 --> 00:33:01,720 of acacia forest over three nights. 257 00:33:01,840 --> 00:33:05,200 Having made a connection between light and food, 258 00:33:05,320 --> 00:33:07,680 he is heading in a new direction... 259 00:33:17,160 --> 00:33:19,520 ...towards the human world. 260 00:33:34,880 --> 00:33:39,840 Delicious food is laid out for the taking, 261 00:33:39,960 --> 00:33:44,560 including something he has never come across before-- 262 00:33:44,680 --> 00:33:47,600 banana. 263 00:33:47,720 --> 00:33:49,520 This is a safari lodge, 264 00:33:49,640 --> 00:33:53,040 where all wildlife is welcome to come and dine. 265 00:33:55,840 --> 00:33:58,560 Not only that, the owners have put up 266 00:33:58,680 --> 00:34:02,120 a specially-designed bushbaby box. 267 00:34:10,320 --> 00:34:12,120 Another bushbaby... 268 00:34:25,800 --> 00:34:27,400 And another. 269 00:34:39,720 --> 00:34:41,880 A third. 270 00:34:43,360 --> 00:34:47,600 He's stumbled into hostile territory. 271 00:34:47,720 --> 00:34:50,320 An adult male rules this roost 272 00:34:50,440 --> 00:34:54,920 and has no intention of letting another male onto his patch. 273 00:34:57,600 --> 00:35:01,640 Once they notice him, he'll be in trouble. 274 00:35:33,880 --> 00:35:37,760 Their alarm calls are a warning for him to keep away. 275 00:35:48,920 --> 00:35:51,960 But the lure of the sweet-smelling banana 276 00:35:52,080 --> 00:35:54,200 is too much to resist. 277 00:36:32,000 --> 00:36:38,520 Having escaped, he takes his first bite of the stolen banana. 278 00:36:38,640 --> 00:36:40,560 With so much sugar in it, 279 00:36:40,680 --> 00:36:45,200 it's unlike anything he has tasted before. 280 00:36:45,320 --> 00:36:48,200 Powered by this new rocket fuel, 281 00:36:48,320 --> 00:36:51,600 he can continue his search for a new home... 282 00:37:01,800 --> 00:37:04,320 Daybreak in Canada. 283 00:37:17,760 --> 00:37:24,160 The hatchling's instinct to bury herself overnight has paid off. 284 00:37:24,280 --> 00:37:28,960 Being cold-blooded, she basks in the autumn sunshine. 285 00:37:32,120 --> 00:37:35,360 She must warm up to at least 60 degrees 286 00:37:35,480 --> 00:37:38,120 before she can continue with her journey. 287 00:37:54,360 --> 00:37:56,520 There are signs she is close. 288 00:38:00,960 --> 00:38:03,320 Little did she know last night 289 00:38:03,440 --> 00:38:06,440 that she was only 50 feet from the lake. 290 00:38:13,280 --> 00:38:17,880 But it still takes her half an hour to make it to the water. 291 00:38:46,800 --> 00:38:50,480 This is Whitefish Lake. 292 00:39:00,080 --> 00:39:04,760 Finally, she is somewhere she belongs. 293 00:39:10,920 --> 00:39:13,560 No longer clumsy and slow, 294 00:39:13,680 --> 00:39:16,400 her streamlined body and webbed feet 295 00:39:16,520 --> 00:39:18,880 enable her to glide through the water 296 00:39:19,000 --> 00:39:22,120 much faster than she was on land. 297 00:39:30,680 --> 00:39:35,760 This could now be her home for the next 50 years or more. 298 00:39:38,080 --> 00:39:42,200 But she hasn't reached the end of her journey just yet. 299 00:39:45,520 --> 00:39:51,280 She now needs to find a spot in which to hibernate. 300 00:39:51,400 --> 00:39:55,800 She heads towards the deeper, darker, cooler waters 301 00:39:55,920 --> 00:39:58,560 where she will be safe over the winter. 302 00:40:02,440 --> 00:40:04,600 But she is not alone... 303 00:40:12,120 --> 00:40:14,800 A moose has come to feed here. 304 00:40:17,920 --> 00:40:20,760 The turtle is as small as its eye 305 00:40:20,880 --> 00:40:24,080 and practically invisible amongst the pondweed. 306 00:40:26,320 --> 00:40:28,640 She dives out of reach. 307 00:40:41,720 --> 00:40:45,600 But she must return to the surface one last time... 308 00:40:47,800 --> 00:40:52,400 ...to take her last breath for five months. 309 00:40:57,440 --> 00:41:01,080 Then, she dives down to the bottom. 310 00:41:06,240 --> 00:41:11,200 Here, the water won't freeze, even in the middle of winter. 311 00:41:14,960 --> 00:41:17,400 But lurking down here 312 00:41:17,520 --> 00:41:21,080 are monsters a thousand times her size... 313 00:41:40,200 --> 00:41:42,120 ...snapping turtles. 314 00:41:50,920 --> 00:41:54,960 In these waters, they are the top predators... 315 00:42:00,480 --> 00:42:05,280 ...and painted turtle hatchlings are on the menu. 316 00:42:15,000 --> 00:42:18,360 For once, time is on her side. 317 00:42:21,760 --> 00:42:25,200 At 60 degrees, snappers start to slow down 318 00:42:25,320 --> 00:42:28,640 as their bodies prepare for hibernation. 319 00:42:28,760 --> 00:42:32,680 It's becoming too cold for hunting little turtles. 320 00:42:38,960 --> 00:42:42,160 She must hurry to find a good place to hibernate 321 00:42:42,280 --> 00:42:44,880 before her body shuts down, too. 322 00:42:52,280 --> 00:42:55,960 The cold water is already taking effect. 323 00:42:57,920 --> 00:42:59,840 But hibernation will trigger 324 00:42:59,960 --> 00:43:04,440 even greater physiological changes. 325 00:43:04,560 --> 00:43:08,440 Her heart rate can drop as low as eight beats an hour. 326 00:43:11,200 --> 00:43:16,160 Her metabolism will fall to 10% of its usual rate. 327 00:43:26,160 --> 00:43:28,800 She finds a sheltered spot. 328 00:43:32,480 --> 00:43:35,600 She'll hibernate here for five months, 329 00:43:35,720 --> 00:43:39,080 protected from the freezing temperatures at the surface... 330 00:43:42,680 --> 00:43:44,840 ...only becoming active again 331 00:43:44,960 --> 00:43:48,960 when spring brings warmer weather. 332 00:43:49,080 --> 00:43:52,760 And in 12 years, when she is sexually mature, 333 00:43:52,880 --> 00:43:56,920 she'll venture back out of the lake to lay her own eggs... 334 00:44:00,280 --> 00:44:03,400 ...a journey that may see her make the same perilous trip 335 00:44:03,520 --> 00:44:06,560 through the woodland and across the road 336 00:44:06,680 --> 00:44:09,640 to the nesting grounds along Highway 60. 337 00:44:22,080 --> 00:44:24,200 Over the last few nights, 338 00:44:24,320 --> 00:44:27,080 the bushbaby has travelled five miles, 339 00:44:27,200 --> 00:44:30,320 moving closer to the lights on the horizon. 340 00:44:33,880 --> 00:44:37,320 But he still hasn't found a new territory. 341 00:44:45,560 --> 00:44:48,640 Unbeknownst to him, 342 00:44:48,760 --> 00:44:52,840 the lights are those of a huge city-- 343 00:44:52,960 --> 00:44:55,440 Pretoria, 344 00:44:55,560 --> 00:44:58,920 home to nearly 3 million people. 345 00:45:12,880 --> 00:45:15,960 In the suburbs, local conservation groups 346 00:45:16,080 --> 00:45:19,120 have created a novel way for bushbabies to move 347 00:45:19,240 --> 00:45:22,080 between the surrounding patches of forest... 348 00:45:27,160 --> 00:45:28,640 ...ropes. 349 00:45:35,400 --> 00:45:39,920 For this bushbaby, it's a new way to travel. 350 00:45:56,800 --> 00:45:59,920 He catches a whiff of sweet-smelling banana... 351 00:46:02,080 --> 00:46:06,520 ...the rocket fuel he first encountered at the safari lodge. 352 00:46:13,440 --> 00:46:17,360 It has been left out by a bushbaby-friendly resident. 353 00:46:27,040 --> 00:46:29,680 He is unaware he is being watched. 354 00:46:37,120 --> 00:46:41,960 A gang of city-savvy bushbabies regularly feeds on this balcony. 355 00:46:45,440 --> 00:46:48,760 He may be driven away yet again. 356 00:46:56,400 --> 00:47:02,280 But he can tell from their calls that they are friendly. 357 00:47:02,400 --> 00:47:04,880 Instead of chasing him away, 358 00:47:05,000 --> 00:47:08,120 this time, they tolerate his presence... 359 00:47:17,480 --> 00:47:20,440 ...even grooming him, 360 00:47:20,560 --> 00:47:24,880 accepting him into their tribe, 361 00:47:25,000 --> 00:47:26,560 something that would never happen 362 00:47:26,680 --> 00:47:28,920 in the wild acacia forests. 363 00:47:32,680 --> 00:47:35,640 Although interactions with people, pets, 364 00:47:35,760 --> 00:47:40,640 and vehicles can be stressful for bushbabies, 365 00:47:40,760 --> 00:47:44,200 there is an abundance of food here, 366 00:47:44,320 --> 00:47:47,000 and urban bushbabies can weigh a quarter more 367 00:47:47,120 --> 00:47:51,120 than their forest counterparts. 368 00:47:51,240 --> 00:47:54,920 Because there is less competition, their social system 369 00:47:55,040 --> 00:47:58,560 has adapted to be more welcoming to strangers, 370 00:47:58,680 --> 00:48:01,960 and unrelated bushbabies band together 371 00:48:02,080 --> 00:48:04,640 to form a different type of family. 372 00:48:24,880 --> 00:48:28,200 The bushbaby follows his new friends... 373 00:48:30,880 --> 00:48:35,160 ...and they lead him deeper into the metropolis. 374 00:48:46,720 --> 00:48:50,080 They are taking him to a secret location... 375 00:48:57,520 --> 00:49:02,280 ...a place with 24/7 security, 376 00:49:02,400 --> 00:49:06,320 fortified with high walls, 377 00:49:06,440 --> 00:49:09,440 razor wire, 378 00:49:09,560 --> 00:49:12,000 and CCTV. 379 00:49:20,240 --> 00:49:23,760 The gang is undeterred. 380 00:49:23,880 --> 00:49:27,160 This is somewhere worth breaking into. 381 00:49:30,720 --> 00:49:33,320 Once inside... 382 00:49:33,440 --> 00:49:38,120 he discovers what the gang have come to raid. 383 00:49:38,240 --> 00:49:42,840 Pristine white bird of paradise flowers... 384 00:49:42,960 --> 00:49:44,400 full of nutritious nectar 385 00:49:44,520 --> 00:49:47,440 and still blooming in the middle of winter. 386 00:50:01,040 --> 00:50:02,560 Busted! 387 00:50:17,320 --> 00:50:24,040 As they flee, he jumps past some familiar-looking animals... 388 00:50:24,160 --> 00:50:27,520 ...and some less familiar. 389 00:50:32,440 --> 00:50:36,080 This is Pretoria Zoo, 390 00:50:36,200 --> 00:50:40,400 a 200-acre site in the middle of the city 391 00:50:40,520 --> 00:50:44,240 where the gardens are watered year round, 392 00:50:44,360 --> 00:50:49,920 giving the bushbaby gang access to nectar even in the winter. 393 00:50:53,000 --> 00:50:59,200 With sunrise fast approaching, he joins his new bushbaby gang 394 00:50:59,320 --> 00:51:02,400 as they follow their urine scent trail home. 395 00:51:22,200 --> 00:51:25,440 Located at the top of a huge palm tree, 396 00:51:25,560 --> 00:51:28,240 their nest is quite the penthouse suite. 397 00:51:41,960 --> 00:51:45,560 The male bushbaby ventures inside. 398 00:51:54,320 --> 00:51:58,280 Having traveled 15 miles from where he was born, 399 00:51:58,400 --> 00:52:03,240 he has found a life of plenty in a new world. 400 00:52:06,120 --> 00:52:08,680 By leaving space for nature, 401 00:52:08,800 --> 00:52:14,560 humans can give wildlife a chance to thrive.