Eastern Spot-billed Duck

The Eastern Spot-billed Duck is a large grey-brown dabbling duck with a dark crown and eye stripe, pale face and a black bill tipped bright yellow. A greenish-blue wing speculum is bordered by white, and orange-red legs can show clearly at close range. The sexes look alike, unlike the strongly dimorphic Mallard, although males and females have different calls (Wikipedia, general species account).

This duck inhabits lakes, marshes, slow rivers, flooded fields and other shallow wetlands across eastern Asia. It feeds by dabbling and upending for aquatic vegetation, seeds and small animals, and commonly rests on open banks or emergent structures. Pairs form seasonally, and the female nests in dense vegetation near water. The species is widespread in Japan as both a resident and locally moving wetland bird (Wikipedia, general species account).