52 GAME BIRDS OF NORTH AMERICA. 
Partridge should inhabit the same district as the Scaled 
Partridge, the two species associate together apparently 
on most amicable terms, but the kind of ground each 
prefers is usually of so different a character that they are 
not often found together. The Blue Partridge is a hand- 
some bird and attractive in spite of its unsportsmanlike 
habits, the markings of its plumage causing it to appear 
as if covered with imbricated scales, a rather unique dress 
among its brethren. 
CALLIPEPLA SQUAMATA. 
Geographical Distribution.—Western Texas, New Mexico, 
and Southern Arizona. Valley of Mexico. 
Adu/t.—Head, brown or brownish gray, varying in depth of 
hue among individuals; tip of crest, white; throat, pale buff. 
Hind-neck, upper parts of back and breast, bluish gray, each 
feather bordered with black, giving the plumage a scaly appear- 
ance; scapulars, wings, lower back, and rump, pale brown; 
upper tail-coverts and tail, bluish gray; flanks, bluish gray, 
streaked with white; rest of lower parts, pale buff; feathers, mar- 
gined with blackish brown; bill, black. Total length, 94 inches; 
wing, 5; tail, 44; tarsus, 18. There is no difference whatever 
in the coloring of the plumage in the sexes, and males and 
females are indistinguishable except by dissection. 
