Zöology; a textbook for colleges and universities . f life, and conse-quently superficially more or less similar. Ducks, (i) Anseriformes. Ducks, geese, and swans, fa- nd miliar to all. They are most easily recognized by the form of the bill. The young arecovered with down, and are able to swim soonafter hatching from the egg. Nearly all havewebbed feet. Birds of prey (/) Falconiformes. Also called Raptores, or birds of prey; including the hawks, eagles, vultures, andtheir relatives. The hooked bill is character-istic, though it is found in other birds, such asthe owls and parrots. The owls, t
Zöology; a textbook for colleges and universities . f life, and conse-quently superficially more or less similar. Ducks, (i) Anseriformes. Ducks, geese, and swans, fa- nd miliar to all. They are most easily recognized by the form of the bill. The young arecovered with down, and are able to swim soonafter hatching from the egg. Nearly all havewebbed feet. Birds of prey (/) Falconiformes. Also called Raptores, or birds of prey; including the hawks, eagles, vultures, andtheir relatives. The hooked bill is character-istic, though it is found in other birds, such asthe owls and parrots. The owls, thoughresembling the hawks in their flesh-eatinghabits and the form of the bill, are really notrelated to them ; in fact, modern students ofbirds associate the owls more closely with thehumming birds than with the national bird of the United States is theso-called Bald Eagle, Halitztus leucocephalus,-the specific name meaning white-headed1in Greek. It is widely distributed over ourcountry, but by no means peculiar to it. BIRDS 387. Photograph by E. R. Sanborn, N. Y. Zool. Soc. FIG. 158. Mute swans (Olor olor); an Old World bird, domesticated for about seven centuries.
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectzoology, bookyear1920
