. 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 . ddle feathers broad to their rounded ends, restgrowing successively more acute, but lateral without any slender filamentous extremely large, along culmen,
. 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 . ddle feathers broad to their rounded ends, restgrowing successively more acute, but lateral without any slender filamentous extremely large, along culmen, along gape, deep at base, wide atnostrils ; about as long as head, with culmen regularly curved from base to tip; outline ofmandibular rami slightly concave; gonys about straight; angle not very weU marked. 758 SYSTEM A TIC SYNOPSIS. — L ONGIPENNES — GA Tibiae bare about ; tarsus , rather exceeding middle toe and claw, the scutella iuft-ont replaced by polygonal scales similar to but larger than those on its sides, which arerough ; hind toe extremely small; outer lateral nearly as long as middle toe and claw, whichis Bill dark vermilion red, growing lighter and somewhat diaphanous toward thetip. Pileum and occipital crest glossy greenish-black, extending to below the lower level ofthe eyes, and occupying the termination of the feathers on the side of the mandible to the \. Fig. 512. —Caspian Tern, g nat. size. (From Brehiii.)exclusion of the white; lower eyelid white, forming a noticeable spot on the greenish; awhite streak along sides of upper mandible, not extending to the end of the feathers. Mantlepearl-blue, the line of demarcation between it and the white rather indefinite, both on napeand rump ; most of the tail-feathers, and especially the central ones, retaining a more or lesspearly tint. Shafts of the primaries yeUowish-white; primaries grayish-black, but, whennew, so heavily silvered over as to appear of a light hoary gray, espe
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Keywords: ., bo, bookcentury1800, bookdecade1890, booksubjectbirdsnorthamerica
