FERRUGINOUS ROUGH-LEGGED HAWK 
348. Archibuteo ferruguneus. 23 in. 
Legs feathered to the toes. Adults with back, shoul- | a 
ders, thighs and legs, rusty, barred or streaked with | 
black; tail grayish-white, tinged with rusty. Young 
birds are brownish-black, above and without any rusty 
below. In the dark phase they are sooty-brown, more 
or less varied with rusty, and the tail is the same as 
in the light plumage. Their bill is larger and tail 
longer than that of the last species. A fairly abundant 
hawk on the plains and prairies west of the Miss., 
usually not at a great distance from water. 
Nest.—Usually on the ground on bluffs or rocky 
ledges, but sometimes in trees; made of sticks and 
weeds; sometimes used year after year, and then be- 
coming bulky, as it is added to each year; eggs white, 
handsomely spotted and blotched with blackish-brown, 
very variable. 
Range.—Breeds west of the Miss., from Kansas, lo- 
cally, and the Dakotas, abundantly, north to Sas- — 
katchewan. Winters south to Mexico. 911 
