
Photo: (c) Christoph Moning, some rights reserved (CC BY) · CC-BY
Aythya baeri
Habitat
Nests of sedges and reeds among emergent vegetation, usually in shallow water or on small islands
Range
Resident in north and central China; formerly bred in south-east Russia and north-east China, wintering in southern China, Vietnam, Japan and India
Clutch size
5–14 eggs
Size
41–47cm
Wingspan
70–79cm
Weight
Males on average 500–730g
Baer's pochard is a diving duck of eastern Asia and a monotypic species. It is 41–47cm long with a 70–79cm wingspan, and males weigh on average 500–730g. It has a distinctive black head and neck with a green gloss, and in poor light it can look completely black (Wikipedia, general species account).
It is a resident bird in north and central China and formerly bred in south-east Russia and north-east China, migrating in winter to southern China, Vietnam, Japan and India; it is no longer migratory in central and eastern China. The clutch is 5–14, with males usually on sentry duty and females incubating. The nest, built from sedges, reeds and other plants, is placed among emergent vegetation, usually in shallow water or on small islands or ridges. Hunting and habitat loss are given as the main reasons for its decline (Wikipedia, general species account).