Each small sandpiper must harvest up to 20,000 shrimp while simultaneously avoiding the fastest animal on earth: the peregrine falcon.

Journey from Canada’s Arctic to the boreal forest and discover how polar bears, coastal wolves, lynx and more survive in the North. Timing and seizing opportunity can mean the difference between life and death in this wild and rugged outpost.

Clement Kiragu, a Kenyan trainee cinematographer on "Running with the Beest," recounts the thrills and challenges of working on his first wildlife film. From setting up crucial time-lapses to operating the croc cam, his 64 days in the wilderness are packed with action. Clement also makes the case for Kenyans stepping up to tell the story of their natural world and the wildlife around them.

As the wildebeest migration approaches the river, they know there is danger lurking in the water. Nile crocodiles move towards the herd's crossing points at this time of year and wait for the big arrival.

The wildebeest migration across the river has become a premier tourist attraction in Kenya. While tourism is vital to wildlife conservation, vehicles in these numbers disorient and intimidate the wildebeest’s behavior.

As the wildebeest herd moves north through the border regions with Tanzania, it faces a human threat: an invisible web of wire snares. Poachers sneak across the fenceless border from Tanzania to hunt animals for bush meat, using wire snares.

Witness the great wildebeest migration in East Africa, the most impressive mass movement of land animals on Earth. Travel with two Maasai guides who expose today’s conflict between people and wildlife and share new ideas for co-existence.

Get a sneak peek at a brand new season of NATURE on PBS, starting October 2022.

"Westward Wings" follows researcher Maggie Hirschauer as she strives to learn more about the monarch butterfly population in western Montana. Maggie’s research opens a window to a world of pollinators and highlights the importance of creating habitat for native pollinators across the Western United States.

When a piece of carrion is spotted on this side of the border, griffon, black, and bearded vultures descend en masse. A strict ranking system applies at the carcass, but one visitor turns up without an invitation.

The stars of Portugal's only national park are not newcomers. Wild Garrano horses have lived in the Peneda-Gerês mountains of northern Portugal for 20,000 years.

The Mediterranean and the coastal waters of North Africa and western Europe were once home to hundreds of thousands of Mediterranean monk seals. These days just 300 or so remain. Over centuries they have been hunted to the brink of extinction.

Discover the wildlife and landscapes of Portugal, shaped by its history as a global trading hub. From forest to coast, witness the majesty of the country’s wild horses, storks, monk seals, flamingos and more.

A polar bear mother and her cubs search for scraps during a too-hot summer. In the Southern Beaufort Sea, there are only about half as many polar bears as there were 35 years ago. North Alaska has the largest oil field in America, and its effects can be seen in the changing landscape and climate.

The caribou migration is a veritable feast for grizzly bears — if the bears can catch them. Grizzlies hunt all the way to the Arctic Ocean in the summer, but caribou are faster than bears on the open plain.

Within hours of being born, a muskox calf is ready to start exploring. Meanwhile, its mother keeps a careful eye on her newborn. Muskoxen were hunted to extinction in Alaska by 1860 but were reintroduced in the 1930s. There are now a few thousand in the state.

The Arctic National Wildlife Refuge in Alaska has long protected survivors of the Ice Age, but this frozen fortress is melting due to climate change. For the caribou, musk oxen, polar bears and Arctic foxes, the Ice Age is slipping away.

Go behind the scenes of "Hippo King." Filmmakers Will and Lianne Steenkamp discuss their experience creating the film.

Usually, elephants and hippos stay out of each other's way, but these elephants deliberately gate-crash this hippo's lagoon party.

A newborn hippo draws unwanted attention from predators like crocodiles and lions. His brave mother is well aware of these threats and keeps him close.