Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 723
^Hmt: AN EXCELLENT PHOTOGRAPHIC STUDY OF ARCTIC HARES. 556 NATURE AND SCIENCE FOR YOUNG FOLKS [April, FLUFFING ITS FEATHERS TO PRODUCEA WARMER COAT Many of our birds have the habit of fluffing, orpuffing out, their feathers. It is believed that … A PET HAWK MAKING ITS COAT OF FEATHERS THICKER. they do this to increase their warmth, by making,among their feathers, innumerable, small air- spaces, which are quickly warmed by the heat ofthe body. Since warm air is a poor conductor ofheat, these air-spaces then prevent the warmthof the body from…
Children's literature
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