FALCONS, nAWKS, EAGLES, ETC. 



195 



a*. Tail rufous, with somctinics a black band near the end. 



337. Kki)-taii.ki) Hawk (Ad.) and Races. 

 a*. Tail black or blackish, with four to six white or yruyish cross- 

 bars . 33t». KEU-snoi:i,i)EUKi) Hawk ^Ad.). 



33tt«. FtoHinA Kku-siiouluerei) Hawk (Ad.). 

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



334. Am. Goshawk. 



J. Three outer jiriinaricacniarginate or "notched."* 



lA. Tail with two or three broad whitish bars. 



343. BuoAD-wiNOED Hawk (Ad.). 

 i*. Tail with numerous narrow, indistinct blackish bars. 



34'2. Swainson's Hawk (Ad.). 

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

 outer primary barred. 



a. Wing under O'OO, tail-feathers of nearly equal length. 



33'J. SnAui'-siiiNXEn Hawk (Ad.), 



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

 dle ones; upper tail-covfrts not white. 3.33. Cooper's Hawk (Ad.). 



c. Wing over !C00; upper tail-coverts white. 331. Mausu Hawk (Ad.). 

 J). Tarsus entirely feathered. 



a. Legs rich rufous, heavily barred . 348. Feruloinous Roitni-LEo. 



b. Legs ochraceous-burt", more or less barred. 



34'ra. Am. Kouaii-LEooEU Hawk. 

 8. Under parts without streaks or bars. 

 A. Under parts white. 



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



334. SuouT-TAiLEi) Hawk. 



b. Scales on front of tarsus numerous, rounded. 

 J*. Tail barred. 



ft*. Upper parts not barred 304. Am. Osprey. 



f>». Upper parts barred 353. White Gyrfalcon. 



c*. Tail not barred. 



(». Tail square, white S28. WniTE-TAii.Ei) Kite. 



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

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



a. Tarsus entirely feathered . , . 347'*. Am. Roroii-LEOOEn Hawk, 



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

 J». Wing over 13-00. 



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

 primaries slightly "notched" .... 3.30. Everolade Kite. 

 6*. Three outer primaries " notched"* . 34'2. Swainsox'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. Sii(>1{t-tailei) Hawk. 



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



329. Mississippi Kite. 



* See Fig. 70. 



■Ij'-I 



