SPY IN THE WILD • S2E4of4 •• The Poles •• BBC HD 2021

Cameras travel to the Arctic and Antarctic circles, following chicks in a king penguin colony on the island of South Georgia in the Southern Ocean. On the other side of the world, Spy Walrus discovers a walrus family hauled out on an ice floe, before Spy Gyrfalcon follows the family as they head towards dry land. Elsewhere on Norway's Hornoya island, Spy Puffin follows thousands of male puffins as they gather in the snow and search for their life-long partners.