Differently From The Polyborus Brasiliensis And
Chimango, It Has Found Its Way To The Falkland Islands.
The
turkey-buzzard is a solitary bird, or at most goes in pairs.
It
may at once be recognised from a long distance, by its lofty,
soaring, and most elegant flight. It is well known to be a
true carrion-feeder. On the west coast of Patagonia, among
the thickly-wooded islets and broken land, it lives exclusively
on what the sea throws up, and on the carcasses of dead
seals. Wherever these animals are congregated on the rocks,
there the vultures may be seen. The Gallinazo (Cathartes
atratus) has a different range from the last species, as it
never occurs southward of lat. 41 degs. Azara states that
there exists a tradition that these birds, at the time of the
conquest, were not found near Monte Video, but that they
subsequently followed the inhabitants from more northern
districts. At the present day they are numerous in the valley
of the Colorado, which is three hundred miles due south of Monte
Video. It seems probable that this additional migration has
happened since the time of Azara. The Gallinazo generally
prefers a humid climate, or rather the neighbourhood of
fresh water; hence it is extremely abundant in Brazil and
La Plata, while it is never found on the desert and arid
plains of Northern Patagonia, excepting near some stream.
These birds frequent the whole Pampas to the foot of the
Cordillera, but I never saw or heard of one in Chile; in Peru
they are preserved as scavengers.
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