"Our planet is home to millions of different animals." "The big and the powerful capture our attention." "But there is another story to tell." "Beneath our feet are hidden, almost magical worlds... teeming with extraordinary little creatures." "The world looks very different to them." "A falling acorn... becomes a meteor." "A tiny trickle, a tsunami." "And every enemy... is a giant." "Now, using the latest technology, we can recreate the world from their perspective." "In this episode, we enter the secret worlds of two urban jungles- the chaos and commotion of Rio... and the futuristic metropolis that is Tokyo." "These are dramatic tales of life inside the Hidden Kingdoms." "HIDDEN KINGDOMS" "URBAN JUNGLES" "Tiny marmoset monkeys, small enough to sit in the palm of your hand." "They're a close-knit family, at home in the tree tops of the forest." "But this is no ordinary forest." "Rio de Janeiro." "This vast city crammed with over six million people is eating into the jungle." "But some jungle creatures are standing their ground." "The only way to survive is by making the most of what humans can offer." "For a gang of marmosets, finding food in the city means leaving the safety of the trees." "It's a journey fraught with danger." "One young male is bold enough to lead the way." "To marmosets, these power cables are like tree branches... if a little more slippery." "Surveying the streets below, they can spot any opportunity for a meal." "The streets of Rio are strewn with discarded litter." "But they are also patrolled by cats and dogs." "To survive, the marmosets must work as a team." "Look-outs sound the alarm." "Young marmosets are more inquisitive than the adults." "The city is so noisy, it's hard to hear the others calling time to move on." "The link to the rest of the family has been severed." "He has no choice but to take to the streets." "How can this young marmoset survive without the protection of his family?" "On the other side of the planet..." "Tokyo." "With well over 30 million people, there's barely room for any green space." "This concrete jungle is one of the most inhospitable places on earth for wild animals." "But there is one out tonight, an armour-plated mini monster... a rhinoceros beetle." "Removed from the forest, he's now a captive... and a gladiator." "Introduced to another male, all he needs to do is what comes naturally to him... fight." "The winner is the one who throws the other on his back." "He wins." "Beetles usually eat high-energy tree sap." "Here, some fruit will have to do." "Then he's back in the ring." "For their size, rhinoceros beetles are the strongest creature on Earth- able to lift over 100 times their own body weight." "Males with longer horns are more likely to win and this male's horn is as big as they get." "But even he's not invincible." "Nonstop fighting is exhausting." "No longer a hero, he's just an unwanted bug." "Now the only hope for survival is to find an oasis amongst the concrete." "Back in Rio, the young marmoset is searching for his lost family." "Down at street level, he is far from alone." "A cane toad- quite at home in the gutter... and poisonous to the touch." "The warning rattle of a snake... mimicked by a burrowing owl to keep intruders away." "Burrowing owls have adapted well to city life... and even enjoy a trip to the beach." "Rotten food isn't on the menu, but collecting it is all part of a plan." "Just one more trip is needed." "This time, to visit the local agouti." "Agouti usually live in the forest, but these have come to feast on scraps left by the residents." "It looks like the owl has hit the jackpot, too." "A crowd this size would never occur in the forest but here, food is abundant." "The agouti barely notice one more mouth to feed." "Cats, on the other hand, miss nothing." "The city owl is too quick for a cat." "Back at the burrow, it's time to put the plan into action." "It's not long before visitors are attracted to the smell." "He's been setting a trap all along." "Burrowing owls live on a diet of bugs." "In the wild, owls use animal dung as bait, but this one has adapted brilliantly to city life and can now enjoy its own home delivery service." "Life is not proving quite so easy for the marmoset." "Without the rest of the gang to help him, the youngster is very hungry... and very alone." "In Tokyo, the rhinoceros beetle is not just alone, but still miles from any oasis." "He does have one trick up his sleeve, though... a huge pair of wings." "And the strength to perform a vertical take-off." "He may have escaped the back streets, but flying around Tokyo's skyscrapers is a precarious business." "He isn't alone." "The sky is filled with other nocturnal bugs." "Insects normally navigate by the light of the moon." "Tokyo's lightscape plays havoc with their map reading." "Light radiates in all directions... and the confused bugs are lured closer and closer." "..right into the path of a predator." "The glaring lights don't distract bats." "They see with sound." "Listening to the echoes from its high-pitched calls allows the bat to form a detailed picture of the world around it." "A large, clumsy rhinoceros beetle might seem a tempting target." "One way to avoid capture is to drop out of the sky." "That's one thing a heavy beetle can do well." "Bats aren't the only animals up here feasting on the glut of bugs." "It's warmer in the busy city than in the surrounding countryside, so very attractive to cold-blooded geckos." "The extra heat speeds up the lizard's metabolism, allowing it to strike with lightning speed." "In the forests, geckos hunt on the trunks of tall trees, so a Tokyo skyscraper is home from home." "Gecko feet can normally stick to anything." "Unfortunately, the tall buildings and the warm city air can create a problem never found in the forest." "The swirling currents of air form millions of mini tornadoes." "There's too much turbulence, even for a gecko." "When its grip fails, a gecko can glide to safety." "But he's landed on someone else's patch." "The hungry rhinoceros beetle has gate-crashed too." "all in the sight of the deadliest man-eater in Tokyo." "In Rio's labyrinthine streets, there are endless places for animals to hide." "A leafcutter ant has left the security of its family to scout for food." "Ants use their antennae to detect food." "This is fuel for the colony." "Within minutes, fellow workers are by her side, having followed a trail of chemicals that she has deliberately left behind her." "The ants must work fast." "Down here, exhaust fumes can create a thick toxic smog." "Now they must take the long road home, back to the rest of the colony." "As the first worker ants reach the safety of the underground colony, city life is about to come crashing in on their world." "Washed away from the colony, any chance of finding the way back seems impossible." "But there's help to guide them." "Despite the flood, the chemical trail is still strong." "A single gram of it would be powerful enough to create a trail around the entire globe." "Such extraordinary communication and teamwork enables leafcutter ants to overcome whatever the city throws at them." "The only way marmosets can keep in touch is by calling." "For a moment, the young male thinks his calls are being returned." "But the noises of the city can be deceptive." "It's not the call of his family, but the sound of a truck braking." "Down on the streets, there are trucks everywhere." "Back in Tokyo, the beetle has landed in the lair of a man-eater." "This praying mantis is trying to attract a mate." "The breeze will carry her scent to the city beyond." "Out on the town, a male is quickly hooked." "But he's aware of this lady's reputation." "He has to exercise a bit of caution." "This city breeze will work in his favour, distracting her from his approach." "He's lucky." "Most males don't even make it this far." "Success." "But the lady wants more..." "His head." "It may look gruesome, but the extra protein that the female gets from eating him will actually improve the chance of his young surviving." "A bamboo house plant provides a mantis with all she needs, but it's not enough for a rhinoceros beetle." "He needs tree sap." "The scent is on the air, but it's drawing him deeper into the city." "Saved by his armour." "A jumping spider- no bigger than a grain of rice." "Up on a traffic light, the spider is looking for a meal." "These spiders don't make webs." "Instead, they hunt." "Using his silk safety line, the spider gets within range." "It locks eight eyes on the target, focuses, jumps... and misses." "In the forest, jumping spiders rarely miss their target." "And they certainly don't miss it again... and again." "and again." "In red light, the spider can't judge distance properly." "But when the light turns green, everything snaps back into focus." "This time, the aim is perfect." "Unfortunately, in a city with this much traffic, it's only a matter of time before the lights turn red again." "Caught in the rush, the rhinoceros beetle hasn't the energy to fly." "Any chance of finding sanctuary seems impossible." "Night in Rio." "Marmosets normally retreat to the treetops and huddle together for warmth and security." "This young marmoset isn't so lucky." "Under the cover of darkness, unsavoury characters appear." "Rats are the ultimate city winners- opportunists that can adapt to any environment and consume almost anything they find." "The city offers a tarantula countless places to make a burrow." "Night also brings out the city's most ruthless hunter." "Silent and supple, with superb night vision, cats are the kings of Rio's back streets." "And a marmoset's worst enemy." "Even a cat can't match the agility of a marmoset that's learnt to live on the high wires of Rio." "At last, dawn is near, bringing relative safety to the marmoset." "But in Tokyo, dawn brings a beetle's nemesis." "The skyscrapers echo with their calls." "In the forest, beetles bury themselves in the ground to sit out the perils of the day." "A crow." "For the beetle, it's like facing a Tyrannosaurus Rex." "With every step, the beetle tests the ground, looking for somewhere to hide." "Crows are one of the world's most intelligent animals." "They always rise to a challenge, especially where food is concerned." "To a beetle, these wrappers are the closest thing to burying itself in fallen leaves." "A crow's beak can crack a beetle's armour like an egg." "The beetle makes a break for it." "With size comes strength- he can force his way between the heavy sacks." "Safe for a moment, the beetle catches the scent of trees on the warm air." "At last they're close." "It's a temple- a sanctuary for humanity in the heart of the city." "At last, trees flowing with delicious sap." "The garden has attracted other beetles." "A female." "He's not the only male to be interested." "At last, there's everything to fight for." "He has lost before." "This will be the battle of his life." "He searches for some extra grip, then makes his move." "For the beetle, life has just got a whole lot better." "Back in a world he knows, he can now spend the rest of his short life surrounded by everything he needs." "Outside this oasis in the unforgiving world of Tokyo, only the most resilient and most adaptable can survive." "Dawn in Rio." "It's now nearly a day since the young marmoset was separated from his family." "Suddenly he hears them, far over on the other side of the road." "The only way to them is to cross the wire and he's seen how dangerous that can be." "But the alternative is the danger of life alone." "At last, he's back." "For any social animal, the only way to survive is with the support and protection of friends and family." "Only a few animals have the skills to meet the challenges of city life." "But for those who can, there are great rewards." "With over half the world's population now living in cities, animals and humans are forced to live side by side." "Wherever you are, you're never far from the tiny heroes of the Hidden Kingdoms."