1(58 KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Face, uut l^ure ; upper suiliice of tail, grayisli biowu, wiUi uimierous bars; 

 three outer primaries emargiuate or notched. Swainson's Hawk. 



Buteo swainsoni. 

 See No. 277. 



Section 3. Fourth primary, longest ; upper tail coverts, 



white. 



Under surface of tail, whitish at liase; one liroad suhteriniual baud of dark browu, 

 tipped with grayish white; upper inaudible elongated (see cut). Not recorded 



north of Florida. 



Everglade Kite. 



Elanoidcs forfitatus. 

 See No. 261. 



Upper maudil)le, more hawk-like (see cut); under surface of tail, white or pale 

 rufous, with several bands of dark brown. 



Harsh Hawk. 



Circus hiidsonhts. 

 See No. 265. 



Section 4. Fourth primary, longest; upper tail coverts, 



not white. 



Upper surface of tail, bright rufous brown, with or without bauds (adult). 



Red-tailed Hawk. 



Buteo horealis, and races. 

 See No. 271. 



Upper surface of inner welts of outer tail feathers, liari-ed with tn-owii aud white ; 

 tail feathers, more or less tinged with pale rufous; primaries, not tinged with 

 rufous (immature). Red=tailed Hawk. 



Buteo horealis. 

 See No. 271. 



Upper surface of iuner web of outer tail feathers, barred with brown and white ; 

 tail feathers, more or less tinged with jiale rufous; primaries, more or less 

 tinged with rufous (immature). 



Red°shouldered Hawk. 



Buteo linealus. 



See No. 27.5. 



Upper suifacc of tail, dark Ijrown, barred with white (adult). 



Red°shouldered Hawk. 



Buteo lineattis, and races. 

 See No. 275. 



Face, bare; basal iiortion »t tail, while, b.^rred with black or dark bi'own; end 

 of tail black; thighs, black or dark brown. Audubon's Caracara. 



Polyborus cheriimij. 

 See No. 297. 



