172 



KEY TO THE BIRDS OF EASTERN NORTH AMERICA. 



Caracara. 



Four outer primarh.'S, omargiiiiite, liut not decidedljr notched ; a part of inner web 

 of outer primaries, wliite, sliowiug numerous imperfect Ijars ; tliighs, black, or 

 dark brown ; face, bare. 



Audubon's Caracara. 

 Polyborus cherhomj. 

 See No. 297 



Tliroe outer primaries, uotelied; belly and thighs, not white. 



Swainson's Hawk. 



Buteo swainsoni. 

 See No. 277. 



Tlirce (juter primaries, notciied ; a part of inner wet) of outer primaries, white, 

 showing numi-rous imi)erfect liars: belly and thighs, pure white; liack, dark 

 brown. 



Fish Hawk. 



Pandion haliaetus. 

 See No. 298. 



Two outer primaries, notched; ]U-imaries, dark slaty Idue, allowing greenish 

 tinge wlien lield iu tlie light; tall, long and forked; underparts and thighs. 



white. 



Swallow-tailed Kite. 



Elaiwicles forficatus. 

 See No. 261. 



