FALCONS, HAWKS, EAGLES, ETC. 195 



o^. Tail rufous, with sometimes a black band near the end, 



337. Eed-tailed Hawk (Ad.) and Races. 

 a3. Tail black or blackish, with four to six white or grayish cross- 

 bars . 339. Eed-shouldered Hawk (Ad.). 



339rt. Florida Ked-shouldered Hawk (Ad,). 

 a*. Tail lO'OO long, gray, with several indistinct blackish bands. 



334. Am, Goshawk. 

 I. Three outer primaries emarginate or "notched."* 

 b^. Tail with two or three broad whitish bars. 



343. Broad-winged Hawk (Ad.). 

 /yS. Tail with numerous narrow, indistinct blackish bars. 



342. Swainson's Hawk (Ad.). 



C. Front of the tarsus smooth, or with the scales not sharply defined ; 



outer primary barred. 



a. Wing under 9*00, tail-feathers of nearly equal length. 



332. Sharp-shinned Hawk (Ad.). 



b. Wing over 9-00, outer tail-feathers half an inch shorter than the mid- 

 dle ones; upper tail-coverts not white. 333. Cooper's Hawk (Ad.). 



c. Wing over 9-00 ; upper tail-coverts white. 331, Marsh Hawk (Ad.), 



D. Tarsus entirely feathered, 



a. Legs rich rufous, heavily barred . 348, Ferruginous Eough-leg. 



b. Legs ochraceous-buff, more or less barred, 



347a. Am. Rough-legged Hawk. 

 3. Under parts without streaks or bars. 

 A. Under parts white. 



a. Scales on front of tarsus transverse, more or less square. 



334. Short-tailed Hawk. 



b. Scales on front of tarsus numerous, rounded. 

 b^. Tail barred. 



b^. Upper parts not barred 304. Am. Osprey. 



J3. Upper parts barred 353. White Gyrfalcon. 



fi. Tail not barred. 



f2. Tail square, white 328. White-tailed Kite. 



c-s. Tail forked, bluish black . . , 327. Swallow-tailed Kite, 

 £. Under parts dark brown, slate, gray, or black. 



a. Tarsus entirely feathered . . . 347rt. Am. Rough-legged Hawk. 



b. Tarsus partly feathered, scales transverse, more or less square. 

 Z»i. Wing over 13-00. 



b^. Upper tail-coverts, base and tip of the tail white ; two outer 

 primaries slightly "notched" .... 330. Everglade Kite. 

 b^. Three outer primaries "notched"* . 342. Swainson's Hawk. 

 b*. Four outer primaries " notched " . . 338. Harlan's Hawk. 

 ci. Wing under 13-00. 

 £■2. Primaries more or less distinctly barred ; general plumage sooty 



black 844. Short-tailed Hawk. 



c^. Primaries not barred ; general i)lumage slaty blue. 



329. Mississippi Kite. 



* See Fijr. 70. 



