A huddle of penguins is formed to protect each other from the cold - but young chicks can end up crushed or frozen. Subscribe to BBC Earth for more amazing animal videos - Watch more videos from BBC Earth: Planet Earth Blue Planet Planet Earth II Planet Dinosaur Check out the other two channels in our BBC Earth network: BBC Earth Unplugged: BBC Earth Lab: Penguins: Spy In The Huddle Discover what it really means to be a penguin as the latest spy cameras give us a whole new perspective on the behaviour and extreme survival tactics of these incredible and hugely charismatic birds. Following the success of Polar Bear - Spy on the Ice, the spy cams move to the next level with Penguincam, a range of super-realistic animatronic c
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