FALCONS, HAWKS, EAGLES, ETC. 195 



a". Tail rufous, with sometimes a blacli band near the end. 



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

 a'. Tail black or blackish, with four to si.x white or grayisli cross- 

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



339a. Florida Ked-shodldered Hawk (Ad.). 

 a*. Tail 10-00 long, gray, with several indistinct blackish bands. 



334. Am. Goshawk. 

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

 6'. Tail with two or three broad whitish bars. 



343. Bkoad-winged Hawk (Ad.). 

 b'. Tail with numerous narrow, indistinct blackish bars. 



342. Swainson's Hawk (Ad.). 

 <7. Front of the tarsus smooth, or with the scales not sharply defined ; 

 outer primary baiTcd. 



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. Ferrcginotis Eough-leo. 



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



347a. Am. Eough-leoged Hawk. 

 3. Under parts \7ith0ut 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. 

 J'. Tail barred. 



b". Upper parts not barred 364. Am. Ospre-S 



Js. Upper parts barred 353. White Gyrfalcon. 



c>. Tail not barred. 



c". Tail square, white 328. White-tailed Kite. 



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

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

 a. Tarsus entirely feathered . . . 347a. Am. Eough-legged Hawk. 

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

 J'. Wing over 13-00. 

 J». Upper tail-coverts, base and tip of the tail white ; two outer 

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

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

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

 c'. Wing under 13-00. 

 c'. Primaries more or less distinctly barred ; general plumage sooty 



black 344. Short-tailed Hawk. 



<;». Primaries not barred ; general plumage slaty blue. 



329. Mississippi Kite. 



* See Fig. 70, 



