. 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, inclusive of Greenland and Lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds . elliptical, 55. Family PHALACROCORACID^: Cormorants. Bill about as long as head, stoutor slender, more or less nearly terete,always strongly hooked at the end;tomia gen
. 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, inclusive of Greenland and Lower California, with which are incorporated General ornithology: an outline of the structure and classification of birds; and Field ornithology, a manual of collecting, preparing, and preserving birds . elliptical, 55. Family PHALACROCORACID^: Cormorants. Bill about as long as head, stoutor slender, more or less nearly terete,always strongly hooked at the end;tomia generally found irregularlyjagged, but not truly sen-ate ; a long,narrow, nasal groove, but nostrilsobliterated in the adult state; gapereaching below the eyes, which are set in naked pouch small, but forming an evident naked spaceunder the bill and on the throat, variously encroachedupon by the feathers. Wings short for the order, stiffand strong, the 2d primary usually longer than the 3d,both these exceeding the 1st. Tail rather long, large,more or less fan-shaped, of 12-14 very stiff, strongfeathers, denuded to the base by extreme shortness ofthe coverts; thus almost scausorial in structure,recalling that of a woodpecker or creeper, and used in asimihir way, as a support in standing, or an aid inscrambling over rocks and bushes. The body is com-pact aud heavy, with a long sinuous neck; the general. Fig. 502. — Knee-joint of Phalacrocoraxbicristatus, nat. size, from nature by Dr. Sliufeldt. F, femur; P, patella; T, tibia;Fb, fibula. le, configuration, and especially the far backward set of thes, is much like that of pygopodous birds. While other Steganopodes can stand with thebody more or less nearly approaching a horizontal position, the cormorants are forced into anearly upright posture, when the tail affords with the feet a tripod of support. They also, likethe birds just mentioned, dive and swim under water in pursuit of their piey, using their wingsfor sub
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1896
