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145-150 cm.Larger than preceding specie, deeper bill, pinkish head and
neck, show white neck-ruff and drooping neck-pouch, dark grey above
with still paler, greyer greater coverts and tertials. In flight, whitish
underwing covert, Dark flight featheres with pale grey band along the
upperwing coverts.
ระบบนิเวศ :
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Freshwater marshes, pool in or near open forest sometime paddyfields.