Above brownish-ashy, minutely mottled (transversely) with dusky and, to a less extent, with yellowish-brown. Beneath fine pure ashy. Hab. Sierra Nevada (from Fort Crook southwards) and Rocky Mountains, from the Hellgate region to New Mexico … var. obscurus.
Above brownish-black, minutely and sparsely mottled with slate and rusty-brown. Beneath dark plumbeous. (In northern specimens, especially in females from Sitka, much washed with dark castaneous-rusty.) Hab. Northwest coast mountains, from Oregon to Sitka … var. fuliginosus.
B. Tail nearly even, and without any terminal lighter band, or else having it badly defined.
Colors, in other respects, of var. obscurus, but cheeks, etc., less dusky. Hab. Rocky Mountains of British America, south to the Yellowstone and Hellgate region of United States (where grading into var. obscurus) … var. richardsoni.
PLATE LIX.
- 1. Canace obscurus. ♂ Rocky Mts., 19159.
- 2. Canace obscurus. ♀ Rocky Mts., 19166.
- 3. Canace franklini. ♂ Rocky Mts., 398.
- 4. Canace richardsoni. N. Rocky Mts.
- 5. Canace canadensis. ♂ Nova Scotia, 12564.
- 6. Canace canadensis. ♀ Nova Scotia, 12565.
Canace obscurus, var. obscurus, Say.
DUSKY GROUSE.
Tetrao obscurus, Say, Long’s Exped. R. Mts. II, 1823, 14.—Bon. Mon. Tetrao, Am. Phil. Trans. III, 1830, 391.—Ib. Am. Orn. III, 1830, pl. xviii.—Baird, Birds N. Am. 1858, 620.—Scl. P. Z. S. 1858, 1.—Gray, Cat. Brit. Mus. V, 1867, 86.—Coop. Orn. Cal. I, 1870, 526 (in part). Canace obscura, Bonap. Comptes Rendus, XLV, 1857, 428. Dendragapus obscurus, Elliot, P. A. N. S. 1864, 23.—Ib. Monog. Tetraon. pl.