Habitat / Behavior: 51cm. Seen usually in a large flock that congregate in sheltered bays in daylight. The nests are made of grass and placed in dense clumps near the water. It is a fairly large and heavy duck, grey-brown except for the rufous face, neck and throat, and dark brown cap and eye-stripe.  In flight, the whitish underwing lining and dark flight feathers are diagnostic. The call, probably given by the female is a "quack-quack" (T.Fisher and N. Hicks, 1999). L 20"; Wingspan 33"; Note th eyellow tip to bill, white supercilium, dark line through eye and fairly uniform grayish brown body are distictive. Also note contrasting white wing lining with dark flight feathers. Call is a harsh quack.  May breed all year round as there are records of ducklings in March, April, May, September, October, and December. May breed in any isolated water habitat including, flooded ricefields. Nests are well hidden. clutch is 8 to 16, eggs are dull white with a brownish tinge.(Kennedy et al., 2000)
Threats:
Interesting Information: There are records of this species from Japan and Taiwan suggesting that it is not endemic to the Philippines. However, these may be vagrants or possibly escaped birds and until it is clarified we will continue to consider this are a Philippine endemic.(Kennedy et al., 2000)
Conservation Efforts/Measures:

Photograph Information: Courtesy of Tim Fisher and Nigel Hicks' "A Photographic Field Guide to Birds of the Philippines"