Baer's Pochard

Baer's Pochard is an East Asian diving duck with a long, rounded head. The male's head and neck appear black in poor light but show a green gloss under better illumination, while its white flanks stand out when the bird is floating. These features, together with its larger build and head shape, help distinguish it from the closely related Ferruginous Duck, with which it was formerly treated as a single species. (Wikipedia, Baer's Pochard account)

Across its range, Baer's Pochard breeds around shallow water where sedges, reeds, and other emergent plants provide nest material and concealment. Nests are positioned among vegetation, on small islands, or along low ridges. Clutches contain five to fourteen eggs. The female carries out incubation, while the male commonly remains nearby on sentry duty. The species occurs in eastern Asia, with resident birds in northern and central China and migrants moving farther south in winter. (Wikipedia, Baer's Pochard account)