FALCONS, HAWKS, EAGLES, ETC. 195 



0'. Tail rufous, with sometimes a blaoli band near the end. 



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

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

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



339a. Feobtua Ked-shouldered Hawk (Ad.). 

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



334. Am. Goshawk. 

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

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



343. Beoad-wiitged Hawk (Ad.). 

 6". 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. Shaep-shinned Hawk (Ad.). 



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

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



o. Wing over 9'00 ; upper tail-coverts white. 831. Maesh Hawk (Ad.). 



D. Tarsus entirely feathered. 



a. Legs rich Ynifous, heavily barred . 348. Fekedginotjs Eough-leo. 

 h. Legs oohraceous-buff, more or less barred. 



347o. Am. Eouqh-legged Hawz. 

 3. Under parts without streaks or bars. 



A. Under parts white. 



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



334. Shoet-tailed Hawk, 

 h. Scales on front of tarsus numerous, rounded. 

 Ji. Tail barred. 



4". Upper parts not barred 864. Am. Ospeey. 



J'. Upper parts barred 353. White Gyefalcon. 



c'. Tail not barred. 



6-'. Tail square, white 328. White-tailed Kite. 



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



B. Under parte dark brown, slate, gray, or black. 



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

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

 Ji. Wing over 13-00. 

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

 primaries slightly " notched " . . . 330. Eveeglade Kite. 

 &3. Three outer primaries " notched " * . 342. Swainson's Hawk. 

 J«. Four outer primaries " notched " , . 338. Haelan's Hawk. 

 c\ Wing under 13-00. 

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



black 844. Shoet-tailed Hawk. 



c'. Primaries not barred ; general plumage slaty blue. 



329. Mississippi Kite. 



* See Fig. 70. 



