. 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. Illustrated by 6 steel plates and upwards of 250 woodcuts. Birds. r n CYPSELID^, SWIFTS. GEN. 117, 118. 183 Subfamily CH^TURINJE. Spine-tailed Stuifts. Toes with the normal number of phalanges ; hind toe not reversed, but some- times versatile ; our species have it obviously elevated, and should have come in the Key under A, like gen. 114, 115 ; but it has not been technically so considered (compare § 87, p.
. 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. Illustrated by 6 steel plates and upwards of 250 woodcuts. Birds. r n CYPSELID^, SWIFTS. GEN. 117, 118. 183 Subfamily CH^TURINJE. Spine-tailed Stuifts. Toes with the normal number of phalanges ; hind toe not reversed, but some- times versatile ; our species have it obviously elevated, and should have come in the Key under A, like gen. 114, 115 ; but it has not been technically so considered (compare § 87, p. 49). Tarsi never feathered. In the principal genus, Glimtura, containing about half the species of the subfamily, of various parts of the world, the tail feathers are stiffened and mucronate by the projecting rhachis. The other genera are Collocalia and Dendroclielidon of the Old World ; Cypaeloides, and the scarcely different Nephmcetes, of the New. 117. Genus NEPHCECETES Baird. JiJack Swift. Blackish, nearly uniform. Length nearly 7 ; wing as much ; tail about 3, forked, stifEsh, but not mucronate. Western America. Bd., 142; Elliot, pi. 20 ; Coop. , 349 niger var. bokealis. 118. Genus CHJETUEA Stephens. 7 T ' Chimney 8ivift. Chimney "; Sooty brown with a faint green- ish gloss above, below paler, becoming gray on the throat; Avings black. Length about 5 ; wing the same ; tail 2 or less, even or a little i-ounded, spiny. Eastern United States, migrator}^ very abundant in summer. Like the swallows, which this bird so curiously resembles, not only in its form, but in its mode of flight, its food, and twitter- ing notes, it has mostly forsaken the ways of its ancestors, who bred in hollow trees, and now places its curious open-work nest, of bits p,,^, ,,,, ,,, ^ ,, â *â ^ ' rIG. 110. Cliniiiicy swilt, wjtli mucronate of twig glued together, inside disused rectnx. chimneys. Wils., v, 48, pi. 39, f. 1; Nutt., i, 609 ; Aud., i, 164, pi. 44; Bd., 144 pelasgia.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbirds, bookyear1872
