. 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 . g, nat. size. (From Elliot,) deep at base, much compressed and rapidly tapering to acute decnrved tip, sides erect, smooth,culmen very convex, gape gently curved, gonys nearly stra
. 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 . g, nat. size. (From Elliot,) deep at base, much compressed and rapidly tapering to acute decnrved tip, sides erect, smooth,culmen very convex, gape gently curved, gonys nearly straight, with angle at short, linear, subbasal, marginal, impervious, at base of the horn or cere. Twoseries, postocular and maxillary, of lengthened, straight, stiffish lance-acute white feathers oneach side of head. General form of Fratercula. Size lare^e. One monocerata. (Gr. fxovos, monos, only, single; Kepas, Jceras, horn. Figs. 536, 537, 538.)Unicorn Auk. Horn-bill Auk. Adults in summer: Bill orauge-yellow. Culmen andbase of upper mandible dusky ; feet some yeUow color, the tarsi behind and the soles blackish;claws black. The sharp feathers of the head white, about an inch long. Entire upper partsglossy blue-black; a line of white along edge of forearm. Sides of head and neck, of bodyalong under the wings, with chin, throat, and fore-breast, clear grayish-ash, or pale bluish-. 806 SYSTEMATIC SYNOPSIS. —PYGOPODES. gray; under parts fiom the breast pure whit^^hadiug insensibly into the color of the sides andflanks. Inner webs of wing- and tail-feathers grayish-brown, paler toward base, the shafts ofthe primaries dull whitish at base. Length ; extent ; wing ; tail ; ; middle toe and claw ; outer do. ; inner do. ; chord of culmen without , with horn ; gape ; nostril to tip of horn ; total depth of bill, including horn, In winter : Plumage the same; iris white ; no honi nor acces
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1896
