. 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. FALCONID^ — A CCIPITBINjE : HA jrKS. 529 by species of Buteo). The colors and changes of plumage of this species being practically the same as those of A. fuscus, need
. 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. FALCONID^ — A CCIPITBINjE : HA jrKS. 529 by species of Buteo). The colors and changes of plumage of this species being practically the same as those of A. fuscus, need not be repeated. The chief difference is, that the crown of the adult is usually appreciably darker slate than the back; the white scapular spots are smaller, fewer, or wanting; in high plumage the upper parts are clearer bluish, while the breast has a fine glaucous bloom overlying the rufous and wliite ground-color; the tail is more decidedly white-tipped. A small $ cooperi grades in size nearly down to a large ? fuscus, but there ap- pears to be constantly a difference of a couple of inches of totaljength at least; and in any event, the other char- acters above given wiU suffice for their discrim- ination. In either spe- cies, the yellow of the cere and feet is often or usually obscured vrith ' greemsh. In cooperi, the tarsal scutella are sometimes less distinct than is normal, but are not known to fuse into a boot. A large $ not distantly resembles a young male Goshawk; but the difference in feathering of the tarsus is distinctive. Tem- perate N. Am. at large, and southward; one of the common'' chicken " hawks, and a fellow of great audacity and prowess, preying on birds up to the size of grouse and domestic poultry. Nesting as described for J., fuscus. The eggs I have ex- amined measure from X to X 1. about X ,. FiO. 371. — European Goshawk, ytmng ,}, ^ nat. size, not distinguishable In the cut from the American Goshawk; change of scale to
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1894
