53 



Ad. plumage not seen ; imm. black, abdomen 

 somewhat barred with buff ; tail with in- 

 distinct darker bars. [Tring Mus.] 

 152c. Buteo albicaudatus coloims BerL, J.f .0. 1892, Curasao, 

 p. 91. [Curagao.] Bonaire, & 



Curasao White -tailed Hawk Aruba Is 



Gen. XXXII. ARCHIBUTEO Brehm (1828) 



With characters and appearance of Buteo, but 

 tarsi feathered to the toes. 



Length (^ 26, wing 18.7 in. ; ? length 22.5, 

 wing 17 in. ; above deep brown with paler 

 margins ; head, neck, throat and chest white, 

 streaked with dark brown ; scapulars and 

 least wing-coverts with white bases ; upper 

 tail-coverts banded with white ; tail white, 

 terminal portion ashy, with sub-terminal 

 blackish band ; centre of belly and flanks 

 deep brown mottled with white ; thighs and 

 tarsi buffish-white, barred with brown ; 

 much variation occurs, some birds being 

 much darker, almost uniform below. 



153. Archibuteo lagopus lagopus (Gmel.), S.N., i., p. 

 260 (1788). [ex Brilnn. ; Christiansoe near 

 Bornholm.] 

 Rough -legged Buzzard. 



Much paler ; plumage above with broad white 

 margins ; streaks on throat and breast and 

 thighs much narrower and paler ; upper tail- 

 coverts white with a central streak of brown. 

 153a. Archibuteo lagopus pallidus (Menzb.), Orn. 

 Turkest., i., p. 163 (1888). {Siberia, Turkestan, 

 etc.] 

 Siberian Rough-legged Buzzard. 



Much darker and more ochraceous below 

 normally than A. I. lagopus and varying in 

 melanistic examples to nearly uniform black. 

 153b. Archibuteo lago2)us sancti-johannis (Gmel.), 

 S.N., i., p. 273 (1788). [Hudson Strait and 

 Newfoundland . ] 

 American Rough-legged Buzzard. 



N. Europe 

 and N. Asia; 

 in winter S. 

 to Mediter- 

 ranean, 

 Black Sea and 

 Caspian. 



Siberia, 

 Turkestan, 

 Kamtschatka 

 Ussuri. 



N. America, 

 N. of Mexico, 

 breeding N. 

 of U.S 



