Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 721
f, therefore, he finds the weather of one yearmuch like that of another year, he is apt to reachthe same place at about the same time year afteryear. Sometimes, encouraged by an unusuallymild period, birds come so far ahead of theirusual time that they are trapped by the suddenreturn of cold… … RUBY-THROATED HUMMING-BIRDS. NATURE AND SCIENCE FOR YOUNG FOLKS 459 prise, they all came flying back. But the dayfollowing that, a severe norther suddenly ar-rived. The geese had evidently encountered thisstorm and were driven back by it. Observationsof this kind lead us to believe that birds are…
Children's literature
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