47G 



PREYING BIRDS — RAPTORES. 



Buteo Swainsonii, I'.oNArARTE. 



SWAINSON'S HAWK. 



Biileo vufyirix, Rich, ami Swainsox, Fauna Bor. Amor. Birds, 47. (Not B. vtiJgnrls of 



Euro]je ) 

 BiU(o Sui;ainsomi, Bonaparte, Comp. List, 18.38, 3. (Not of Bonaj)artc, Consp. Av. 19, nor 



of Cassin, Birds of Cal. and Texas, I. 98, wliicli is B. nionliiiiiis, Nuttall, according to 



Cassin.) — Cassin, P. R. Rep. Birds, IX. 19. — Baird, r. R. Rep. X. iii. 11; pi. xii. 



and xiii.— Dresser, Ibis, ISe.*;, 324. — Corns, Pr. Phil. Ac. 1866, 43. 

 Buleo Baiidii, Hov, Pr. A. N. Sc. Phil. — Cassin, Bird.s N. Amer. 1858, 21. (Young.) 



Sp. Cii.\i!. AliovL' ridiius i>r dark lu-divn, tbr tVatlicrs edged with rnfons ; tail brown, 

 tinged with ashy anil barreil with ten cir twidve narrow bands of'blaidvi^h, the snbterminal 

 widest ; tip white, sometimes more asliy ami with fl'w bars. Throat white with longi- 

 tudinal brown lines, sometimes yellowish, the lines I'aint : neck in front and breast ashy- 

 brown, nearly as in tail; some of the feathers eilged with reddish; sometimes nearly 



B. Sjrniv^n 



Young. 



black ; other under parts wdiite with transverse irregular bars of rufous on tibi;e and flanks, 

 and darker bars on abdomen ; sometimes sagittate spots, or nearly pure white, unspotted : 

 under wing coverts white, or with a few spots of brown. Quills brownish-black, with 

 ■wick' cinereous bands on their inner webs, Ijccoming nearly jiure wdiitc towards bases ; tlie 

 shafts of quills and tail, wdute beneath. Length, 19 50 to 22.50 ; extent, 46.50 to 51.50 ; 



