WHITE-TAILED BUZZARD = 45 
on the summit of a tree, and sits there motionless 
for hours at a time, and at intervals utters singularly 
long, loud cries, which become more frequent and 
piercing when the bird is disturbed, as by the ap- 
proach of a person. Its flight is rapid and irregular, 
the short blunt wings beating unceasingly, while 
the bird pours out a succession of loud, vehement, 
broken screams. 
Mr. Barrows observed it on the Lower Uruguay, 
and writes: ‘ It feeds largely if not exclusively on 
fish, nearly every specimen having their remains 
(and nothing else) in their stomachs.”’ It would be 
very interesting to learn how it captures its prey. 
WHITE-TAILED BUZZARD 
Buteo albicaudatus 
Above greyish black, scapulars and upper wing coverts ferruginous ; 
rump and tail white, the latter with a broad black band; throat 
black, beneath white; bill black, feet yellow; length 21, wing 18 
inches, Female similar but larger. 
Tuis Buzzard does not breed on the pampas, where 
I have observed it, but appears there in the spring 
and autumn, irregularly, when migrating, and in 
flocks which travel in a loitering, desultory manner. 
The flocks usually number from thirty or forty to 
a hundred birds, but sometimes many more. I have 
seen flocks which must have numbered from one to 
