The Pale Pack • 2016 • episode "S1E5" • Savage Kingdom

59:06

In New Zealand the travellers make their way through one of the most dramatic landscapes in the world. They are on a journey to find the last remaining kakapo, a fat, flightless parrot which, when threatened with attack, adopts a strategy of standing very still indeed.

S1E5 • Last Chance to See • 2009 • Nature

49:28

The first episode tells how invertebrates became the first creatures of any kind to colonise dry land. Their forerunners were shelled and segmented sea creatures that existed 400 million years ago. Some of them ventured out of the water to lay their eggs in safety, and Attenborough compares those first steps with today's mass spawning of horseshoe crabs off the Atlantic coast of North America.

Part 1 • Life in the Undergrowth • 2005 • Nature

59:22

Liz Bonnin presents a controversial and provocative episode of Horizon, investigating how new scientific research is raising hard questions about zoos - the film explores how and why zoos keep animals, and whether they need to change to keep up with modern science, or ultimately be consigned to history. Should zoos cull their animals to manage populations? Liz travels to Copenhagen Zoo, who killed a giraffe and fed it to the lions, to witness their culling process first hand. They think it is a natural part of zoo keeping that is often swept under the carpet. Should some animals never be kept in captivity? In a world exclusive, Liz visits SeaWorld in Florida and asks if captivity drove one of their orcas to kill his trainer. But could zoos be the answer to conserving endangered species? Liz examines their record, from helping breed pandas for the wild to efforts to save the rhinos. She meets one of the last surviving northern white rhinos and discovers the future of this species now lies in a multimillion-dollar programme to engineer them for stem cells. Veteran conservation scientist Dr Sarah Bexell tells Liz the science of captive breeding is giving humanity false hope.

Horizon • 2016 • Nature

56:55

Starts in the Sahara, where the highest land temperatures have been recorded. Rock paintings depict creatures such as giraffes and antelopes, suggesting that at one point there was enough vegetation to support them.

6/12 • The Living Planet • 1984 • Nature

53:32

A team of intrepid paleontologists discovers that dinosaurs thrived in the unlikeliest of places—the cold and dark of winter in the Arctic Circle. How did they survive year-round and raise their young in frigid and dark winter conditions?

NOVA PBS • 2021 • Nature

49:00

How many animals - including zebras, moose and stalk-eyes flies - assess their opponents' fighting prowess before making an attack that risks injury or death.

8/12 • Trials of Life • 1990 • Nature