Lesser Whistling Duck

The lesser whistling duck lays a clutch of 7 to 12 white eggs that both parents incubate, and large clutches of up to 17 have been noted, which may be a sign of several females laying in one nest. The eggs hatch after about 22 to 24 days (Wikipedia, general species account).

The only source opened for the Bhutan guide gives these breeding details and nothing else. Captive individuals in the United States have lived up to nine years. No plumage, range, habitat or diet information was found, so none is stated, and the entry is kept short.