161 NORTH AMERICAN BIRDS EGGS. 



344. Short-tailed Hawk. Buteo brachyurus. 



Range. A tropical species, which occurs north to the Mexican border and 

 regularly to southern Florida, where it breeds in the large cypress swamps. Its 

 eggs are pale greenish white, sparingly spotted with brown, chiefly at the large 

 end. Si/e 2.15 x 1.60. 



345. Mexican Black Hawk. Urubitinga anthracina. 



[Grayish white.] 



Range. Mexican border of the United 

 States and southward. 



A coal black species about 22 inches in 

 length, distinguished by the white tip, 

 and broad white band across the tail about 

 midway. This is one of the least abun- 

 dant of the Mexican species that cross 

 our border. They are shy birds and 

 build their nests in the tallest trees in 

 remote woods. Their two or three eggs 

 are grayish white, faintly spotted , with 

 pale brown; size 2.25 x 1.80. Data. -Los 

 Angeles County, Gal., April 6, 1889. 

 Nest of sticks, lined with bark and leaves; 

 45 feet up in a sycamore tree. Collector, 

 R. B. Chapman. 



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, 

 numerously 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, lay- 

 ing 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. 



[White.] 



[347.] Rough-legged Hawk. Archibuteo lagopus. 



An Old World species, similar to the next; regarded as doubtfully occuring in 

 Alaska. 



347a. American 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 characterized 

 by the completely feathered legs. The present species is 22 inches long, and in 

 the normal plumage has a whitish head, neck, breast and tail, the former 



