84 
D. Tail white. 
147. 
148. 
149. 
Buteo poliosomus (Quoy et Gaim.) Voy. de 
/’Uran. Ois., p. 92, pl. 14 (1824). [" Iles 
Malouines.’’ | 
Falkland Island Buzzard. 
Wing 3 375-385, 9 405-427 mm. ; general 
colour of ¢ bluish-slate ; tail white with 
about 9 narrow bars of slate grey and broad 
sub-terminal blackish band; @ head, neck 
and upper breast and thighs slate ; mantle, 
scapulars and belly rufous. 
Buteo hypospodius Gurney, Ibis, 1876, p. 
73, pl. 3. [Medellin, Colombia, type B.M.] 
Grey-bellied Buzzard. 
Size larger; wing ¢ 413-448 mm.; adult 
3, general plumage slate, tail with 8 fine 
darker bars and broad black sub-terminal 
band ; abdomen and thighs slate, more or 
less barred with white ; 2 wing coverts and 
belly more or less suffused with rufous ; 
thighs rufous barred with white. 
Buteo pecilochrous Gurney, Ibis, 1879, 
p- 176. [Yauayacu, Ecuador, Salvin-God- 
man Coll.| [= B. melanosternus. Berl. and 
Stolzm. ] 
Gurney’s Red-backed Buzzard. 
Wing ¢ 420, 2468 mm. ; ¢ similar to that 
of b. hypospodius, 2 above and tail much 
as in 9 of B. e. erythronotus, the whole 
mantle and scapulars rufous ; below slate 
barred with white, the throat and chest 
uniform and breast mixed with rufous. 
Immature: throat and chest blackish, below 
rufous ; thighs barred with white; tail 
grey with numerous slaty bars and black 
sub-terminal band. 
Chile, 
Patagonia, 
Falkland Is., 
Tierra del 
Fuego. 
Colombia, 
Venezuela, 
Amazonia 
Brazil. 
Ecuador, Peru, 
Bolivia, Chile. 
