H6 DUSKY GROUSE. 



into Asia, but are entirely different from any of the 

 species on the American continent, which we shall 

 next notice. 



The 6rst of the American birds coming nearest in 

 size and form to those we have been just describing, 

 is the Dusky Grouse, Tetrao obscurus of Say, which 

 was first noticed to science by that gentleman in his 

 description of the various productions, the reward of 

 the expedition to the Rocky Mountains. Bonaparte 

 figured his specimen a female ; and in this country 

 two beautiful representations of both sexes appeared 

 in the Northern Zoology. It is known to inhabit 

 the Rocky Mountains from latitude 40 to 64. In 

 length it is about two feet ; and the plumage exhi- 

 bits the beautiful glossy tints of the others, mixed 

 with grey and white. 



The next of the American grouse which we have 

 to notice is 



