Gen. Char. Leaden-gray color, with black wings and tail. Bill longer than the head, considerably longer than the tarsus, attenuated, slightly decurved; tip without notch. Culmen and commissure curved; gonys straight or slightly concave, as long as the tarsi. Nostrils circular, completely covered by a full tuft of incumbent white bristly feathers. Tail much shorter than the wings, nearly even or slightly rounded. Wings pointed, reaching to the tip of tail. Third, fourth, and fifth quills longest. Tarsi short, scarcely longer than the middle toe, the hind toe and claw very large, reaching nearly to the middle of the middle claw, the lateral toe little shorter. A row of small scales on the middle of the sides of tarsus. Color of the single species leaden-gray, with black wings and tail.
Picicorvus columbianus.
4461
Nucifraga caryocatactes.
9673
This genus is so similar to Nucifraga as to be hardly separable; the principal difference being in the slender and more decurved and attenuated bill, with a slightly concave, instead of convex, culmen, and plain instead of spotted plumage. The differences of form are expressed by the accompanying outlines of the generic features of the two. But one species is known, this being peculiar to Western North America.
Picicorvus columbianus, Bonap.
CLARKE’S CROW.
Corvus columbianus, Wilson, Am. Orn. III, 1811, 29, pl. xx.—Bon. Obs. Wilson, 1824, No. 38.—Ib. Syn. 1828, 57.—Nuttall, I, 1832, 218. Nucifraga columbiana, Aud. Orn. Biog. IV, 1838, 459, pl. ccclxii.—Ib. Syn. 1839, 156.—Ib. Birds Am. IV, 1842, 127, pl. ccxxxv.—Bon. List, 1838.—Nuttall, Man. I, (2d ed.,) 251. Picicorvus columbianus, Bonap. Consp. 1850, 384.—Newberry, P. R. R. Rep. VI, IV, 1837, 83.—Baird, Birds N. Am. 1858, 573.—Lord, Pr. R. A. Inst. IV, 121 (British Columbia).—Dall & Bannister, Trans. Chicago Acad. I, 1869, 286.—Cooper, Orn. Cal. 1, 1870, 289. “Corvus megonyx, Wagler.”