54 
SPOTTED GROUS. 
red tip being the full spring plumage; though it is asserted that 
this species does not vary in its plumage with the seasons. 
However this may be, we have thought proper to give a 
representation of the anomalous male bird from the Rocky 
Mountains in our plate, whilst the female, placed with the Cock 
of the Plains, that its reduced size may be properly estimated, 
has been chosen among the ordinary specimens having the tails 
tipped with red; the red tip being still more conspicuous in the 
common males, from which, in order to comprehend all, our 
description has been drawn up. 
