312 



ROCK, AND WOOD GROUS. 



184. Rock. "O OCK Gr. With a black line from the bill to the eye. In all other 

 parts of the plumage of the fame colors with the White, N° 183; 

 but inferior in fize by one third. 



Differs in nature. Feeds on the tops of fmall birch. Frequents 

 only the dry rocky grounds, and the larch plains. Makes a fingular 

 fnoring noife, with its neck ftreched out, and feemingly with diffi- 

 culty. Is very numerous in the northern parts of Hud/on' s Bay^ 

 and never vifits the fouthern end, except in very hard weather. 

 Never takes fhelter in the woods, but fits on the rocks, or burrows in 

 the fnow. Is inferior in goodnefs to the preceding. 



Malei 



S12 



■ Female* 



^, Wood Grous, Br. Zool. \.W 92. 



Tetraonis alterum Genus, Plinii, lib. x. c. 22, 



Tetrao urogallus Kjader, Faun. Suec. N° 200. — ^Lalhanl, 



La Tetras ou le grand Coq de Bruyere, De Buffan, ii. 19 r. tab. v. — PL Enl. 73, 74. 



LR. With head, neck, and back crofled with (lender lines of 

 blade and grey : upper part of the breaft gloffy green : tail 

 black ; the feathers on each fide fpotted with white : legs .feathered : 

 toes naked and pe£linated. Length two feet eight : Weight 

 fometimes fourteen pounds. 



Length of the female only two feet two: color ferruginous and 

 black, difpofed g;enerally in bars. 



. Notwith- 



