. Key to North American birds; containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary. Illustrated by 6 steel plates and upwards of 250 woodcuts. Birds. ANATIDiE, SWANS. GEN. 247. 281 247. Genua CYGNUS Linnseus. *^.* Adult plumage entirely white ; younger, the head and neck washed with rusty brown ; still younger, gray or ashy. Bill and feet black. Length 4-5 feet. UyC Trumpeter Swan. Tail (normally) of 24 feathers. No yellow spot on bill, which is rather longer than the head, the nostrils fair
. Key to North American birds; containing a concise account of every species of living and fossil bird at present known from the continent north of the Mexican and United States boundary. Illustrated by 6 steel plates and upwards of 250 woodcuts. Birds. ANATIDiE, SWANS. GEN. 247. 281 247. Genua CYGNUS Linnseus. *^.* Adult plumage entirely white ; younger, the head and neck washed with rusty brown ; still younger, gray or ashy. Bill and feet black. Length 4-5 feet. UyC Trumpeter Swan. Tail (normally) of 24 feathers. No yellow spot on bill, which is rather longer than the head, the nostrils fairly in its basal half. Mississippi Valley, westward and northward; Canada (O. passmorei HiNCKs). Sw. and Eioh., Fn. ii, 464; Nutt., ii, 370; Aud., vi, 219, pis. 382, 383; Bd., 758 Fig. 182. Auicricau Swau. /y' 7 7 Whistling Swan. Tail (normally) of 20 feathers. A yellow spot on bill, which is not longer than the head; nostrils median. N. Am. G. hewichii Sw., Fn. , 465; Nutt., ii, 366; O. beivickii Nutt., ii, 372; C amencawMS Aud., vi, 226, pi. 384; Bd., 758. . americanus. Suhfamily ANSEBINyU. Geese. Lores completely feathered ; tarsi entirely reticulate. Neck in length between that of swans and of ducks ; cervical vertebrae about 16 ; body elevated and not so much flattened as in the ducks ; legs relatively longer ; tarsus generally exceeding, or at least not shorter than, the middle toe ; bill generally rather short, high and compressed at base, and tapering to tip, which is less widened and flattened than is usual among ducks, and almost wholly occupied by the broad nail. The species as a rule are more terrestrial, and walk better, than ducks ; they are generally herbivorous, although several maritime species (gen. 249, and an allied South American group) are animal-feeders, and their flesh is rank. Both sexes attend to the young. A notable trait, shared by the swans, is their mode of resenting intrusion by hissing with outstretched neck,
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbirds, bookyear1872
