THE BIRD BOOK 
346. Mexican Goshawk. Asturina plagiata 
Range. — Mexico, north to the border of the 
United States. 
A beautiful, medium sized Hawk (17 inches 
long), slaty gray above, white below, numer- 
White 
Rough-legged Hawk 
ously barred with grayish; tail black, crossed 
by several white bars. These are graceful 
and active birds, feeding largely upon small rodents, and occasionally small 
birds. They nest in the top of tall trees, laying two or three greenish white, 
unmarked eggs; size 1.95 x 1.60. Data. — Santa Cruz River, Arizona, June 3, 
1902. Nest in the fork of a mesquite tree about forty feet from the ground; 
made of large sticks, lined with smaller ones and leaves. Three eggs. Col- 
lector, O. W. Howard. 
347a. Rough-legged Hawk. Archibuteo lagopus sancti-johannis. 
Range.- — Northern North America, breeding chiefly north of our borders and 
wintering south to the middle portions of the United States. 
The Rough-legs are large, heavily built birds of prey, specially cliaracerized 
by the completely feathered legs. The present species is 22 inchse long, and in 
the normal plumage has a whitish head, neck, breast and tail, the former being 
streaked and the latter barred 
with blackish; the remainder of 
the upper and underparts are black 
ish brown. Their nests are usually 
placed in trees, and less often on 
the ground than those of the next 
species. These Rough-legs are very 
irregularly distributed, and are no- 
where as common as the next. 
While the greater number nesv. 
north of the United States, it is 
very probable that a great many 
nest on the higher ranges within 
our borders. The species is often 
taken in summer, even in Massa- 
chusetts. They lay three eggs of a 
bluish white color, boldly splashed 
with dark brown; size 2.25 x1.75. Bluish white 
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