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Why ducks don't freeze in winter
With waterproofed feathers and clever blood circulation - ducks can endure the cold.
Duration:
This clip is from
More clips from Episode 3
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The best of our winter wildlife on day three
Duration: 02:05
More clips from Winterwatch
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A beaver sits down to eat in the midst of a fast flowing stream
Duration: 00:16
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Mute swans journey through a frozen landscape
Duration: 00:30
