Common Pochard (Aythya ferina) female. The Common Pochard 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.