Nature Season 4 Episode release dates & where to watch

1. And Then the Rains Came

Torrential rains flood Kenya’s Tsavo Plain triggering a cycle of animal and plant regeneration that flowers in the short period before the next drought.

2. Battle of the Leaves

How plants and their leaves adapt to different climates, predatory animals and man.

3. The Ganges Gharial

A five-year chronicle of India’s endangered gharial crocodile.

4. One Man’s Island

The year-long sojourn of artist and naturalist Keith Brockie on Scotland's Isle of May is captured on film.

5. Selva Verde: The Green Jungle

An exploration of the ecosystem of Central America's rain forest.

6. The Plant Hunters

An exploration of the scientific research into the nutritional, medicinal and economic value of plants.

7. Kalahari: Wilderness Without Water

An examination of the diverse plants and animals that have adapted to the harsh environment of the Kalahari Desert in South Africa.

8. Emas: High Plains of Brazil

A visit to Brazil's national park Emas, home to a unique collection of rare and unusual wildlife.

9. The Feathered Swarm

The huge mating flocks of the East African quelea, feared by farmers almost as much as they fear locusts.

10. Kingdom of the Ice Bear: The Frozen Ocean

A look at sea creatures of the Arctic including planktonic animals, small crustaceans, seals, belugas, tucked narwhals and polar bears.

11. Kingdom of the Ice Bear: Land of Beyond

After the nine-month Arctic winter, lemmings, hares, foxes and caribous become active to raise their young.

12. Kingdom of the Ice Bear: The Final Challenge

A study of man’s relationship with the Arctic and its wildlife.

13. Saguaro: Sentinel of the Desert

Wolfgang Bayer focuses on the native giant saguaro cactus of the southwestern United States.

14. Death Trap

The sophisticated trapping mechanism of the main group of carnivorous plants.

15. Aspen: Dancer on the Wind

A look at the trembling aspen, a widely distributed poplar found in more regions of North America than any other tree.

16. Secrets of an African Jungle

The fragile ecosystem of the great African rainforest of Korup in Cameroon.

17. Birdwatch from Florida

Chronicling a weeklong series of bird-watching activities at sites that include the Anhinga Trail in the Everglades, Tampa Bay Island and Port Orange.

18. The Gooneys of Midway

Wildlife cinematographer Wolfgang Bayer focuses on the Laysan Albatross of the Hawaiian Islands.

19. Where Eagles Fly

A five year study of the golden eagle, Britain's largest bird of prey, in the Scottish highlands.

20. The Skyhunters Finale

An examination of the vultures of Africa's Serengeti plain and the rainforests of South America.