. 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. Birds; Birds. FALGONIB^ — FALCONING: FALCONS. 531 rior size, measuring about X , soiled whitish, "marlied irregularly with large Ijvii, (juite faint blotches of drab a
. 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. Birds; Birds. FALGONIB^ — FALCONING: FALCONS. 531 rior size, measuring about X , soiled whitish, "marlied irregularly with large Ijvii, (juite faint blotches of drab and yellowish-brown.'' 4»7. A. a. stria'tulus ? (Lat. striatulus, finely striped.) Western Goshawk. Described as having the markings of the under parts so fine and dense as to present a nearly uniform bluish- ashy nebulation, pencilled with fine black-shafted lines. Rocky Mts. to the Pacific. (Probably untenable.) 45. Subfamily FALCONIN/E: Falcons. Bill furnished with a sharp tooth and notch near the end of the cutting edge of the upper mandible (sometimes two such teeth), and end of under mandible truncated, with notch near . the tip (figs. 372, 374). Nostrils circular, high in the cere, with a prominent central tubercle (fig. 372). Inter-nasal septum extensively ossified. Palate with a median keel ante- riorly. Superciliary shield prominent, in one large piece. Shoulder-joint strengthened by union of scapular process of the coracoid with the clavicle (fig. 362) as in Micrastwr, Her- petotheres, and the Polyhorina alone of Falconida. Wings strong, long, and pointed, with rigid and usually straight and tapering flight-feathers; the tip formed by the 2d and '3d quills, supported nearly to their ends by the 1st and 4th, both of which are longer than the 5th; only one or two outer primaries emarginate on inner webs near the end. Tail short and stiff, with more or less tapering rectrices. Feet strong, rather short, the tarsus of less length than the tibia, feathered more or less
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894
