Winters Ultimate Heavyweight Fight Earths Great Seasons BBC Earth

On the Canadian tundra, there is a winter battle looming as caribou bulls seek to assert their dominance. But while the old bull deals with a rival, the young bucks are eyeing up his female

Taken from 'Earth's Great Seasons' (2016)
Every year, spectacular seasons transform our planet. Spring brings new life, but it's also a dash to wake up and get ahead of everyone else. Summer is a time of long days and glorious abundance. But the living isn't always easy when the temperatures rise. Autumn brings the world's most spectacular transformations. It's also the last chance to breed, to grow up, to stock up before the cold returns. And during winter - the most magical, dramatic season of all - animals find inventive ways to survive. Narrated by Andrew Scott.

Welcome to BBC EARTH! The world is an amazing place full of stories, beauty and natural wonder. Here you'll find 50 years worth of entertaining and thought-provoking natural history content. Dramatic, rare, and exclusive, nature doesn't get more exciting than this