The harpy eagle is the most powerful bird of prey in the world, plucking monkeys from the branches of the jungle canopy. Rare and elusive, they are seldom seen, but with the discovery of a harpy nest in the remote Orinoco rainforest of Venezuela, wildlife film-maker Fergus Beeley has a unique opportunity to follow the life of a chick from birth to adulthood.

A celebration of the life and legacy of Echo, the world's most famous elephant, who was born in 1945 and died in 2009, and who Natural World followed for the last 20 years of her life.

The trials and tribulations of a sea otter pup growing up on the coast of California.

The Himalayas look beautiful and lifeless, unable to give anything, not even enough air. Yet this powerful film reveals the Himalayas provide many gifts - water and food for animals, and for people too, rice and religion, or pets and perfumes.

An intimate portrait of the spectacular Drakensberg - 'dragon mountains' - of South Africa, following giant antelope, bone-cracking vultures and raucous baboons as they struggle to survive in a land of extremes.

A dolphin is about to be born in the treacherous waters of Shark Bay in Western Australia. Puck, the wise mother, must use all her skills to keep her newborn safe from the sharks that sweep into the bay every year. With the help of her close knit family of females she must teach the vulnerable baby dolphin the secrets of survival. From whistling to her unborn calf, to the first few hours of baby Samu's life and the struggles her eldest son faces leaving home, this film provides a rare insight into the lives of bottlenose dolphins.

Giant Pandas were on the brink of extinction but now they are coming back, thanks to an extraordinary conservation project. The Chengdu Research Base in central China is at the heart of a project to breed 300 pandas, and then start introducing them back into the wild. It is the most ambitious and controversial conservation effort ever mounted.

Wildlife documentary featuring the fascinating lives of Britain's beautiful butterflies filmed in exquisite detail and also a celebration of their enduring appeal to the British people. Butterfly-costumed carnival-goers dance at Notting Hill, street artist Nick Walker uses their image to brighten bare city walls, burlesque dancer Vicky Butterfly recreates butterfly dances and at Britain's biggest tattoo convention women reveal their butterfly tattoos.

It's the largest and most ambitious habitat recreation project ever known: to bring back to life one of the world's greatest marshlands. And it's happening in Iraq.

In the 1960s, 'Born Free' captured the world's imagination with the story of Elsa, an orphaned lioness who was taken in by George and Joy Adamson and returned to a life in the wild. The book and film sparked a new love of nature that has blossomed ever since, but the true story of what happened afterwards was far more tragic as both George and Joy were murdered.

A real-life drama about a family of chimps trapped in a lost world. They live in a deep and ancient forested gorge that runs though the African savannah and for fifteen years it has been cut off from the rest of the jungle, leaving the chimps imprisoned.

Broken Tail was the most flamboyant tiger cub Colin Stafford-Johnson had seen during many years spent filming India's wild tigers. After leaving his sanctuary and going on the run, Broken Tail survived for almost a year where many said it was impossible - in the unprotected badlands of rural Rajasthan.

From the giant King Cobra to the tiny sawscaled viper, India is home to many of the world's deadliest snakes. Now a new report has revealed that India is in the middle of a snakebite epidemic of epic proportions, with a loss of human life far in excess of any official figures.

Wildlife documentary following the search for grizzly bears in the beautiful Cascade Mountains of Canada. Wildlife filmmaker Jeff Turner has spent a lifetime tracking grizzly bears around the world, and now he has come home to spend a year in the mountains of his youth to discover if the grizzly is still surviving in this beautiful area of British Columbia.