FAMILY PALCONIDiE. HAWKS, FALCONS, EAGLES, ETC. 171 



Section 2. Second primary, longest; first and second 

 primaries, emarginate or notched. 



Back, entirely brown; belly, white, witliout streaks; under tail coverts, pure 

 white ; tarsus, nearly bare. 



Fish Hawk. 



Pdndiiin ItaUaetus carolinensisi. 

 See No. 298. 



Back, I)rown; l)elly, broivri; uniler tail coverts, ^^ot white. 



Black Qyrfalcon. 



Fidco rustkiilus ohsoUUis. 

 See Ko. 289. 



Back, slaty brown and white; under tail coverts, spotted or marked with dusky. 



Gray Qyrfalcon. 



FhIco riisticolua^ and races. 

 See No. 287. 



Back, white, or white streaked with slaty brown; under tail coverts, white. 



White Qyrfalcon. 



Falco islandus. 

 See No. 286. 



Section 3. Tliird primary, longest. 



Four outer primai'ies, notched ; basal [lortiou of inner webs of primaries, largely 

 white, without bars ; thighs, tawny or buff, more or less barred ; tarsus, 

 thickly feathered. 



American Rough=:egged Hawk. 



Archilivteo Ji/r/npus saiicti-hlianm's. 

 See No. 281. 



Four outer primaries, notched; bas.al portion of inner webs of primaries, largely 

 white, without bars ; thighs, tinged with deep rufous, heavily barred ; tarsus 

 thickly featheri'd. 



Ferruginous Rough-legged Hawk. 



Archihuti'ij fcrrnginens. 



See No. 282. 



General plumage, entirely sooty brown, or black; foui- outer primaries, notched; 

 primaries and tail, with more or less white, or gray ; tarsus, thickly feathered. 



American Rough-legged Hawk (black plumage;. 



ArchihiiCeu Ifiijuptis simcti-johannis. 

 See No. 281. 



