FAMrr.Y FALCONlDyE. HAWKS, FALCONS, EAGLES, ETC. l71 



Section 2. Second primary, longest; first and second 

 primaries, emarginate or notched. 



I5:ick, entirely l)ro\vii; belly, white, without stic;ik.« ; uiiilcr tail coverts, pure 

 white; tarsus, nearly bare. 



Fish Hawk. 



FundioH haliaehis caroUnensis. 

 See Xo. 298. 



P>:icl<. tiiDWii; hfUy, hro'vn; under tail coverts, »V)t wliite. 



Black Gyrfalcon. 

 Fdlco rusticolns uhsoletus. 

 See No. 289. 



Hack, slaty lirown and white; under tail coverts, spotted or marked with dusky. 



Gray Gyrfalcon. 



Fah'O rusticolns, (iml races. 

 See Xo. 287. 



Hack, white, or white streaked with slaty hrown ; under tail coverts, white. 



White Gyrfalcon. 



Falco islnndns. 

 See Xo. 280. 



Section 3. Tliird primary, longest. 



Four outer i)riniaries. notclied; basal portion of inner webs of primaries, largely 

 white, without bars ; thighs, tawny or i)utr, more or less barred : tarsus, 

 thickly leathered. 



American Rough-legged Hawk. 



Archihutco lnf/iij)us saiicti-juliniuu's. 

 SeeXo. 281. 



l-'our outer |>iiniaries, notched; i)asal portion of inner webs of primaries, largtdy 

 white, without bars; tid^hs, tinged with dee[) rufous, heavily barred ; tarsus 

 thickly Icalhcred. 



Ferruginous Rough-legged Hawk. 



Arcliil'iUiit fi iTHiiini us. 



See No. 28£. 



Cenei-il ipjuni.ige. eniirely sooty brown, or lilack; four outer primaries, notched; 

 primarie-i .uid lad, with more or !e«s while, or gray; tarsus, thickly feathered. 



American Rough-legged Hawk (^black phima>;c . 

 Arthihutiii Ittijojiits siinrti-joliitniiis. 

 See Xo. 281. 



