The Common Pochard, Aythya ferina, is a medium-sized diving duck.

The adult male has a long dark bill with a grey band, a red head and neck, a black breast, red eyes and a grey back. The adult female has a brown head and body and a narrower grey bill band. The triangular head shape is distinctive. Pochards are superficially similar to the closely related North American Redhead and Canvasback.

Their breeding habitat is marshes and lakes with a metre or more water depth. Pochards breed in much of temperate and northern Europe into Asia. They are migratory, and winter in the southern and west of Europe.

These are gregarious birds, forming large flocks in winter, often mixed with other diving ducks, such as Tufted Duck, which they are known to hybridise with.