3. White frontal patch covering whole crown, melting gradually into the ashy of the nape; upper parts bluish-ashy. Wing, 6.00; tail, 6.00; bill, 1.00 and .31. Young. Bluish-plumbeous, inclining to ashy-white on the crown and cheeks. Hab. Rocky Mountains of United States … var. capitalis.
Perisoreus canadensis.
18440 8452
In the more slender form, longer and narrower bill, and paler tints with a predominance of the light colors, of the var. capitalis, compared with the typical, or standard, var. canadensis, we see the peculiar impression of the middle region; while in the var. obscurus, the more dusky tints, and predominance of darker colors, the influence of the well-known law affecting colors in birds of the northwest coast region is seen.
CANADA JAY; WHISKEY-JACK; MOOSE-BIRD.
Corvus canadensis, Linn. Syst. Nat. I, 1766, 158.—Forster, Phil. Trans. LXII, 1772, 382.—Wilson, Am. Orn. III, 1811, 33, pl. xxi.—Bon. Obs. 1824, No. 42.—Aud. Orn. Biog. II, 1834, 53; V, 1839, 208, pl. cvii. Garrulus canadensis, Bon. (Saggio, 1831?) Syn. 1828, 58.—Swainson, F. Bor.-Am. II, 1831, 295.—Nuttall, Man. I, 1832, 232.—Aud. Syn. 1839, 155.—Ib. Birds Am. IV, 1842, 121, pl. ccxxxiv. Dysornithia canadensis, Swainson, F. Bor.-Am. II, 1831, Appendix. Perisoreus canadensis, Bon. List, 1838.—Ib. Conspectus, 1850, 375.—Cab. Mus. Hein. 1851, 219.—Newberry, Rep. P. R. R. Surv. VI, IV, 1857, 85.—Baird, Birds N. Am. 1858, 590.—Coues, P. A. N. S. 1861, 226.—Samuels, 366. Garrulus fuscus, Vieillot, Nouv. Dict. XII, 1817, 479. Pica nuchalis, Wagler, Syst. Av. 1827 (Pica No. 14). Garrulus trachyrrhynchus, Swainson, F. Bor.-Am. II, 1831, 296, pl. lv (young). “Coracias mexicanus, Temminck,” Gray.
Perisoreus canadensis.
Sp. Char. Tail graduated; lateral feathers about one inch shortest. Wings a little shorter than the tail. Head and neck and forepart of breast white. A rather sooty plumbeous nuchal patch, becoming darker behind, from the middle of the cap to the back, from which it is separated by an interrupted whitish collar. Rest of upper parts dark ashy-plumbeous; the outer primaries margined, the secondaries, tertials, and tail-feathers obscurely tipped with white. Beneath smoky-gray. Crissum whitish. Bill and feet black. Length, 10.70; wing, 5.75; tail, 6.00; tarsus, 1.40.