FAMILY FALCONIDA. — HAWKS, FALCONS, EAGLES, ETC. Al 
Section 2. Second primary, longest; first and second 
primaries, emarginate or notched. 
Back, entirely brown; belly, white, without streaks; under tail coyerts, pure 
white; tarsus, nearly bare. 
Fish Hawk. 
Pandion haliaetus carolinensis. 
See No. 298. 
Back, brown; belly, brewn; under tail coverts, "ot white. 
Black Gyrfalcon. 
Falco rusticolus obsoletus. 
See No. 289. 
Back, slaty brown and white; under tail coverts, spotted or marked with dusky. 
Gray Gyrfalcon. 
Falco rusticolus, and races. 
See No. 287. 
Back. white, or white streaked with slaty brown; under tail coverts, white. 
White Gyrfalcon. 
Falco islandus. 
See No. 286. 
Section 3. Third primary, longest. 
Four outer primaries, notched; basal portion of inner webs of primaries, largely 
white, without bars ; thighs, tawny or buff, more or less barred; tarsus, 
thickly feathered. 
American Rough-'egged Hawk. 
Archibuteo lagopus sancti-johannis. 
See No. 281. 
Four outer primaries, notched; basal portion of inner webs of primaries, largely 
white, without bars; thighs, tinged with deep rufous, heavily barred; tarsus 
thickly feathered. 
Ferruginous Rough-legged Hawx. 
Archibuteo ferrugineus. 
See No. 282. 
General plumage, entirely sooty brown, or black; four outer primaries, notched ; 
primaries and tail, with more or less white, or gray; tarsus, thickly feathered. 
American Rough-legged Hawk (black plumage). 
Archibuteo lagopus sancti-johanuts. 
See No. 281. 
