NEW SPECIES OF GROUSE. 
335 
winter in the neighbourhood of springs, lakes, or large 
streams, in hocks of sixty or eighty. They are easily 
captured by small snares formed of sinews of the deer 
tribe. They are very abundant on the subalpine regions 
of the Kocky Mountains, in latitude 52° N. longitude 
115° W. They are still more numerous in the moun- 
tainous districts of the river Columbia, in lat. 48° N. 
long. 118 W. 
“ This species is rare on the mountains of the north- 
west coast. Mr Douglas captured some in April 1825, 
and several more during the winters of 1826 and 1827. 
The birds from the last named locality appeared larger, 
with the general colours more distinct, and a broader 
marking of white at the extremity of the tail. A few 
seasons ago Mr Sabine received specimens of this kind, 
through the Hudson’s Bay Company, which were 
supposed to have been obtained among the mountains 
near the sources of the river Athabasca. 
« The third species is named the smaller pheasant-tailed 
o-rouse, ( Tetrao urophasianellus ,) a beautiful bird, 
nearly allied to the pin-tailed grouse of Latham ( Tetrao 
phasianellus .) The general colour is pale brown, richly 
barred and blotched with black, particularly on the 
back and scapulars, where the black forms the prevailing 
portion of the plumage. The wing-coverts are marked 
with subrounded pale spots, and the outer webs of the 
primary quill-feathers are also marked with many almost 
colourless spots of a rounded or oblong figure. The 
sexes resemble each other in their plumage. The tail 
of the male is more fully developed, and his dimensions 
exceed those of the female. 
“ The flight of this species is swift, steady, and almost 
noiseless. Their habits approach closely to those of 
the large species first described. They inhabit the 
same country, form their nests after the same fashion, 
and, in similar situations, subsist on the same food, and, 
produce their young at the same season. The number 
of eggs varies from eleven to fifteen. Of these the 
colour is light ash, and their size does not much exceed 
