FAMILY FALCONID^E. HAWKS, FALCONS, EAGLES, ETC. 



169 



Adult. Swainson's Hawks. Immature. 



Throat, white; breast, dull brown; thighs, barred rufous brown and white; 

 three outer primaries emargiuate or notched (adult) Swainson's Hawk. 



Buteo swainsoni. 

 See No. 277. 



Throat, butt' or butt* white ; breast, heavily marked with dark brown ; thighs, pale 

 rufous or buff with or without bars ; three outer primaries emarginate or notched 

 (immature). Swainson's Hawk. 



Buteo swainsoni. 

 See No. 277. 



Throat and underparts fineiy barred with gray and dull white, the feathers with 

 dark shafts; thighs, barred and mottled with gray and white; tail, 9.50 or over; 

 wing, over 11.50 (adult). Goshawk. 



Accipiter atricapillus. 

 See No. 268. 



Throat and underparts and thighs, white, or tawny white, streaked with dark 

 brown; tail, strongly barred (immature). Goshawk. 



Accipiter atricapillus. 

 See No. 26$. 



