BAR-HEADED GOOSE (Anser indicus)
is a goose which
breeds in Central Asia in colonies of
thousands near mountain lakes and winters in South Asia, as
far south as peninsular India. It lays three to eight eggs at a time in a
ground nest.
The bird is pale grey and is easily distinguished
from any of the other grey geese of the genus Anser by the black bars on
its head. It is also much paler than the other geese in this genus. In flight,
its call is a typical goose honking. A mid-sized goose, it measures
71–76 cm (28–30 in) in total length and weighs 1.87–3.2 kg
(4.1–7.1 lb).
Bar-headed geese have a slightly larger wing area
for their weight than other geese, which is believed to help them fly at high
altitudes. While this decreases
the power output required for flight in thin air, birds at high-altitude still
need to flap harder than lowland birds.[INFO:WIKIPEDIA]
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