194 



FALCONS, HAWKS, T;AGLES, ETC. 



i I 



a*. Back fuscous, fourtli primary longest, outer tail-fcatliers half an 



inch or more shorter thuu the middle ones; wing over ttOO. 



833. CooPEu's Hawk. 

 b. Wing over 1000. 



i». Second primary longest, tail generally over 900. 



A'. " Lower tail-coverts immafuiate white." 353. White Gvukalcon. 



b*. " Lower tail-coverts always more or lees marked with dusky." 



Hhi. Gray Gykkalcon and Kaccs. 



c>. Second primary longest, tail under 9'00. 



c*. Tarsus shorter than middle toe without nail, upper parts blackish. 



35(5. Dick Hawk. 



c». Tarsus longer than middle toe without nail, upper parts 



brownish 355. Tkaikie Falcon. 



<fi. Third or fourth primarj' longest. 



d'. Upper tail-coverts white 331. Maksh Hawk. 



d*. Upper tail-coverts brownish . . .334. Am. Goshawk (Im.). 



£. Outer primary generally one color, base sometimes whitish or with 



a few imperfect bars. 



fl. Tarsus entirely bare, scales on its front large, rounded. 



3t>'2. Ai dibon's Caua< aua. 



b. Tarsus entirely feathered .... 348. FEituroiNors Koloh-leu. 



c. Tarsus partly feathered, scales on its front small, rouiuled. 



304. Am. Osprey. 



d. Tarsus partly feathered, scales on its front transverse, more or less 



square. 

 </'. Three outer primaries emarginate or "notched."* 



(/». Wing under lioO .... 843. Huoad-winc.ko Hawk (Im.). 



d^. Wing over I'i-OO 342. Swain.son's Hawk (Im.), 



«». Four outer primaries emarginate or '• notched." t 



t'. Upper tail-coverts pure wiiite 331. Maksh Hawk. 



«». Upper tail-coverts not pure white; wing under 13-50; lesser 

 wing-coverts conspicuously margined with rufous. 



339. Ked-shouldekeh Hawk (Im.). 

 e*. Upper tail-coverts not pure white ; wing over 13-50; lesser wing- 

 coverts not conspicuously margined with rufous. 



337. Red-tailed Hawk and Races. 

 2. Feathers of under parts with more or less numerous 

 cross-bars. 



A. Scales on front of the tarsus numerous, rounded. 



rt. Wing under 15-00 356. Dlck Hawk. 



b. Wing over 15-00 3(i2. ArniBON's Caracaka. 



B. Scales on front of the tarsus sharply defined, transverse, more or less 



square. 

 «. Four or five outer primaries emarginate or " notclied." i 

 (/>. Tail white at the base and tipped with whitish. 



330. Everglade Kite. 



See Fig. 70. 



t See Fig. 09. 



