Defenders of the reef • 2018 • episode "S1E4" • Arabian Seas

49:13

Examining some of the weird relationships that develop between species, from birds that relieve clients of hangers-on to hermit crabs that enlist stinging anemones to repel octopuses.

7/12 • Trials of Life • 1990 • Nature

28:59

In this final episode, Iolo explores bird design - from their ability to fly to the way that their beak design, colour and camouflage enable them to live in the many habitats Wales has to offer. Using ultra-slow motion photography, Iolo looks at how garden birds have such control over take off and landing, and explains why fulmars are one of our most supreme fliers.

S1E5 • Secret Life of Birds • 2012 • Nature

28:19

This story takes place in the vast northern land near the coast of the Sea of Okhotsk in eastern Hokkaido. Taking center stage are two mother Hokkaido red foxes caring for 10 pups. The mothers, who are in fact mother and daughter, each use their strengths and display amazing parental teamwork.

S1E5 • Wildlife • 2017 • Nature

23:15

Lions, hyenas, cheetahs, and the highly intelligent African painted dog all have different, but brutally efficient, hunting instincts. Meet these intimidating rulers of the African plains and learn the secrets of their secure reign at the top of the natural food chain.

S1E1 • Attack and Defend • 2016 • Nature

53:37

This instalment is the first of several to concentrate on mammals. The platypus and the echidna are the only mammals that lay eggs (in much the same manner of reptiles), and it is from such animals that others in the group evolved. Since mammals have warm blood and most have dense fur, they can hunt at night when temperatures drop. It is for this reason that they became more successful than their reptile ancestors, who needed to heat themselves externally. Much of the programme is devoted to marsupials (whose young are partially formed at birth) of which fossils have been found in the Americas dating back 60 million years.

9/13 • Life on Earth • 1979 • Nature

53:28

On a high ridge in Newfoundland, Canada, nestled between the Atlantic Ocean and the borders of an old grove forest, a Red fox, the matron of her family group, gives birth yet again. Follow the pups as they grow and learn to hunt, adapt, and survive. Explore the family dynamic of these clever creatures as bonds are formed. But the vixen knows that not all her cubs will inherit these tall trees, crystal lakes, and the ocean spray. Before the snows come again, she will have to banish some of her offspring for the good of the family. We also hear from scientists in Madison, Wisconsin and Bristol, England, about their studies on urban Red foxes who are facing a much different challenge than their Canadian counterparts. And another scientist tracks how Red foxes are moving out to the Arctic tundra and surviving in one of the harshest landscapes.

PBS Nature • 2017 • Nature