204 



KEY AND DESCRIPTION 



(melanistic) phase, in which nearly the whole plumage is a 

 somewhat glossy black. 



Length, 15-18 ; wing, 101-13 ; tail, 6-71 , tarsus, 2 J^ ; oulmen, -|. Soutli 

 America north to Florida, where il breeds. 



17. Mexican Black Hawk (345. Uruhitinga antkraclna). — A 

 southern Texas, coal-black hawk, with a central broad white 

 band across the tail, and a white tip ; the ends of the upper 

 tail coverts are also white. The young is mottled blackish- 

 brown above and streaked buily below ; the tail is crossed 

 with about seven bands of blackish and grayish. 



Length, 21-23 ; wing, 13-16 ; tail, 8-11 ; tarsus. 

 Northern South America north to southern Texas. 



3; : oulmen, U. 



18. Mexican Goshawk (346. Astufina plagid,ta). — A south- 

 western, ashy-backed, white-bellied hawk, with a black tail 



crossed by several 

 somewhat broken white 

 bands and a white or 

 whitish tip. The white 

 belly and breast are 

 beautifully and finely 

 barred with dark lines. 

 The young is blackish- 

 brown above and whit- 

 ish below, much mot- 

 tled with reddish above 

 and blackish below ; 

 tail, like the back, 

 crossed with numerous 

 blackish bars. 

 Mexican Goshawk Length, 17 ; wing, 91- 



111 ; tail, 7-8; tarsus, 2=-; 



culmen, |. Southwestern border of the United States, south to Panama. 



Once seen in Illinois. 



19. American Rough-legged Hawk (347'. ArcJuMUeo lagdpus 

 sancti-johAniiis). — A large, dark-bro^vnish hawk, with rough, 



