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.

In the vast Canadian wilderness, there lives a very special bear family. Just out of hibernation, two black cubs have a pure white mother. She's not a polar bear or albino - locally she's known as a ghost bear. This far north, winter is never far away, and this unusual family must work hard to find enough food to see them through. They will also need to avoid other large predators, but being so different could bring them unwelcome attention.

A look at the challenges young animals face, from their first steps through to leaving home. For any animal, the early days of life are often the most difficult. Finding food, avoiding predators and generally learning life's essential skills is tough. However, with a little parental guidance growing up can be an adventure. By following some special tiger cubs in India, an adolescent mountain gorilla in Uganda and two nervous polar bear cubs in the high Arctic, the trials and tribulations of growing up wild are revealed.

For the first time, and through the eyes of two special mountain lion families, the true nature of North America's big cat can finally be revealed. Set in Wyoming's spectacular Rocky Mountains, the dramatic story of two mothers struggling to raise their kittens is helping scientists rewrite our understanding of these elusive predators. This is mountain lions up-close, in-depth and more intimate than ever before.

David Attenborough narrates the intimate story of a leopard mother and her two cubs. This very special family must survive in the wilds of Botswana alongside some less-than-friendly neighbours: lions, wild dogs and hyenas. The competition for food is tough, and if they are going to make it they must learn a new skill - they must learn to fish. This is an epic family drama. With them every step of the way is local cameraman Brad Bestelink. Brad's 18-month journey following the lives of these secretive big cats offers a rare glimpse into an otherwise hidden world.

With their charismatic faces and extraordinary head-turning ability, owls are one of our best-loved birds. And yet it's rare to catch more than a glimpse of one in the wild. These mysterious birds haunt our night, floating through the darkness with an eerie silence. But how do they see in the dark? And how do they fly so silently? Through the eyes of two special barn owl chicks and with the help of world leading scientists, Natural World reveals the magic behind owls' superpowers.

From enormous tortoises and deep-diving lizards to fish-eating snakes and birds that hunt giant venomous centipedes, the wildlife of the world-famous Galapagos Islands is unique and bizarre. This wilderness once inspired Charles Darwin's theory of evolution, but it is currently undergoing a human revolution, with tourism driving a population boom. David Attenborough narrates this modern-day story of the Galapagos and reveals whether, in this ever-changing world, its animals can still thrive.

In what turns out to be an explosive year, witness Iceland through the eyes of the animals and people that have made this wild island home. An arctic fox family must eke out a cliff-top living, an eider farmer has his hands full playing duck dad to hundreds of new arrivals and Viking horsemen prepare to saddle up for the autumn round up. But nature's clock is ticking, and the constant volcanic threat eventually boils over with one of Iceland's biggest eruptions in more than 200 years. This land of ice and fire will not be tamed.

Running through the heart of Ireland, the Shannon is the longest river in the British Isles. For locally born naturalist and cameraman Colin Stafford-Johnson, it is also the wildest. Amongst the river's cast are kingfishers and predatory pike, and living on its banks are native red squirrels. On a seasonal journey in his faithful canoe, Colin paddles along the Shannon to reveal its wild treasures.

In southern Africa, a pride of lions has rewritten the rules - by learning to take down elephants. In this follow up to Africa's Giant Killers, we join the pride at the start of the rainy season. As the elephants depart, a catalogue of dramatic events unfolds. The pride males turn against each other, an inexperienced mum puts her new born cubs in mortal danger, a rival group of lions challenge the pride for its territory and, when lightning strikes, fires burn day and night. When the dust eventually settles, the pride is left with only one choice - to face their old foe the elephants or risk starvation. The final showdown awaits.