As temperatures hit minus 60 food becomes scarce, and animals such as foxes and hares shed their colourful coats to camouflage themselves in the snow. The end of winter heralds one of the world's greatest feeding frenzies as large ocean predators target the millions of fish who have found refuge in the Gulf of Alaska.
For the animals of the Okavango Delta, life itself depends on a fortuitous natural anomaly: a river that cuts through the mighty Kalahari Desert. Embark on a tour of this accidental paradise, where a colorful ecosystem of plants, animals, and birds flourish in the unexpected abundance.
The Nsefu lion pride of Zambia are in an enviable position, with a litter of new cubs, control of the best territory on the Luangwa River, and strong males to protect them. But as the cubs grow older, pressure mounts as they begin to understand their roles and how every misstep can threaten the very existence of their family.
New England is the stage for the most incredible colour change on earth, when the vivid greens of summer give way to the gold’s and reds of autumn. This film reveals how this vibrant fiesta is created by the battles between the trees and the forests' inhabitants. Moose, chipmunks, rattlesnakes and a bizarre mixture of caterpillars all play a crucial role, but surprisingly the forest itself was made so colourful thanks to a combination of hard work by beavers, ants and humans.
Meet the big birds, a feathered family who have never flown a day in their lives! From ostriches to kiwis, these bizarre birds appear to be nature's greatest novelty act. How they came to be and how they continue to survive is a fascinating tale that has long captivated Sir David Attenborough. It is a story of dedicated dads, enormous eggs and a serious need for speed. And far from being the court jesters of the animal world, these flightless curiosities once nearly ruled the land.