EGGS OF NORTH AMERICAN BIRDS. 59 



to 4, rather spherical, yellowish white, spotted and blotched 

 with brown and umber of varying shades ; 1.75 -\- 2.35 to 1.80 

 -\- 2.38. Nests placed on low trees and bushes. Breeds in 

 the Rio Grande Valley, Texas, and southward through Mexico 

 and Central America, and most of South America. 



342. Swaixson's Hawk, Buteo sioainsoni. Eggs, 4 to 0, 

 varying from spherical to oval, yellowish white, spotted and 

 blotched irregularly and rather faintly with reddish brown, 

 with occasional markings of purplish; 1.75 -|- 2.30 to 1.82 -[- 

 2.32. Breeds in Western North America, from Wisconsin, 

 Illinois, Arkansas, and Texas, to the Pacific coast ; north to 

 the Arctic regions, and south to Buenos Ay res, in May. 

 Nests placed in trees. 



343. Broad- WINGED Hawk, Buteo latissimns. Eggs, 3 or 

 4, elliptical, oval, or spherical, dirty white, spotted and 

 blotched, usually quite faintly but thickly, with reddish brown, 

 but occasionally more heavily witli umber ; 1.68 -f- 2.15 to 

 1.70 -|- 2.20. Breeds in Eastern North America, from New 

 Brunswick and the Saskatchewan region, to Texas and 

 Mexico, southward to Central America, Northern South 

 America, and the West Indies, in May in the more northern, 

 and a little earlier farther south. Nests placed in trees. 



344. Short-tailed Hawk, Buteo brachyurus. Eggs, un- 

 known, extralimital. Occurs in Mexico, Central America, and 

 most of South America. Bird occasionally, perhaps regularly, 

 in Florida. 



345. Mexican Black Hawk, Uruhitinga antkracina. 

 Eggs, 2 or 3, oval, white, unspotted; 2.08 -f 1.70 to 2.10 -f 

 1.75, Breeds from Arizona southward to Northern South 

 America. Nests placed in large trees. 



346. Mexican Goshawk, Asturina plagiata. Eggs, 2 or 

 3, rounded oval, white, showing a faint tinge of bluish, un- 

 spotted ; 1.60 4- 2.00 to 1.65 to 2.04. Breeds in the south- 

 western liorder of the United States, southward to Panama, in 

 May and June. Nests placed in trees. 



