Heat exchange in duck's foot

Heat exchange in duck's foot

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Credit: CLAUS LUNAU/SCIENCE PHOTO LIBRARY

Caption: Heat exchange in duck's foot. Computer illustration showing how warm blood from a waterbird's body is mixed with cold blood in its feet in order to keep the feet warm, even in cold water.

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Keywords: anatomical, anatomy, animal, animals, artwork, biological, biology, bird, birds, blood vessel, circulation, circulatory system, cold, duck, fauna, feet, foot, heat exchange, heating, illustration, nature, no-one, nobody, ornithological, ornithology, system, vessels, warm, warming, waterbird, white background, wildlife, zoological, zoology

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