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Name: Jeanne
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Question:
Why don't birds feet freeze during the cold winter months?


Replies:
I'm not sure about all birds, but ducks have what is known as a counter current heat exchange mechanism in their legs and feet. Warmth flows from more warmth to less warmth naturally. As blood flows down the legs from the body it meets with colder blood coming back up and the warmth flows into the colder part of the foot.

K. Van Hoeck


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