GENUS 56. TETRAO. 
SPECIES 1. T. UMBELLUS. 
RUFFED GROUS. 
[Plate XLIX.] 
Jlrct. Zool. p. SOI, •A'o. 179. — Puffed Heath-cock, or Grous, Edw. 
248. — La Gelinote Inipee de Pensylvanie, Biiiss. i, 214. — PL 
Enl, 104. — Buff, ii, 9.81,— Phil. Trans, 62, 393. — Tvrt. Sysi. 
454. — Peale’s Museum, JV'o. 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 appeal’s 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- 
