GENUS 56. TETRAO. 



SPECIES 1. T. UMBELLUS. 



RUFFED GROUS. 



[Plate XLIX.] 



Arct. Zool. p. 301, 7Vb. 179. Ruffed Heath-cock, or Grous, EDW. 

 248. La Gelinote hupee de Pensylvanie, Biuss. i, 214. PI. 

 Enl. 104. BUFF. H, 281. Phil. Trans. 62, 393 TURT.%>J. 

 454. PEALE'S Museum, JVo. 4702. 



THIS is the Partridge of the eastern states, and the Pheas- 

 ant of Pennsylvania, and the southern districts. It is represent- 

 ed in the plate of its full size; and was faithfully copied from a 

 perfect and very beautiful specimen. 



This elegant species is well known in almost every quarter 

 of the United States, and appears to inhabit a very extensive 

 range of country. It is common at Moose fort, on Hudson's 

 bay, in lat 51; is frequent in the upper parts of Georgia; very 

 abundant in Kentucky and the Indiana territory; and was found 

 by captains Lewis and Clarke in crossing the great range of 

 mountains that divide the waters of the Columbia and Missouri, 

 more than three thousand miles, by their measurement, from 

 the mouth of the latter. Its favourite places of resort are high 

 mountains, covered with the balsam pine, hemlock, and such 

 like evergreens. Unlike the Pinnated Grous, it always prefers 

 the woods; is seldom or never found in open plains; but loves 

 the pine-sheltered declivities of mountains, near streams of wat- 

 er. This great difference of disposition in two species, whose food 

 seems to be nearly the same, is very extraordinary. In those 

 open plains called the barrens of Kentucky, the Pinnated Grous 

 was seen in great numbers, but none of the Ruffed; while in the 

 high groves with which that singular tract of country is inter- 



