Yellowstone: Wildest Winter to Blazing Summer

Patrick follows the grizzly bears that are taking a risk with the weather by leaving their winter dens early. Hungry wolves are struggling to bring down their elk prey in the unusually shallow snow. And for great grey owls, it is the iciness of the snow that is hampering their hunts. Yellowstones winter is always one of the most brutal on the planet. But 2016 saw weather records broken, and the wildlife was forced to adapt to survive. Kate Humble gets to grips with the science behind this remarkable season, from understanding the importance of the snowpacks structure as the melt begins to uncovering why Yellowstones unique geology poses problems for some grazers teeth.

It is summer and the Yellowstone beavers have a new challenge. Will the young survive as the river dries up and the colony is forced to move home? As food becomes scarce, wolves have a surprising strategy to keep their pups fed and grizzly bears are unexpected visitors on a cowboy ranch.