Common pochard and small populations are sometimes observed on the River Thames. Large numbers stay overwinter in Great Britain, after the birds retreat from Russia and Scandinavia. These are gregarious birds, forming large flocks in winter, often mixed with other diving ducks such as the tufted duck, with which they are known to hybridise. These birds feed mainly by diving or dabbling. They eat aquatic plants with some molluscs, aquatic insects and small fish. They often feed at night, and will up-end for food as well as the more characteristic diving. In number of countries the population of Common Pochard is decreasing
National Chambal Sanctuary Indian gazelle (chinkara), northern palm squirrel, porcupine, Indian hare, Indian flying fox and hedgehog. The National Chambal Sanctuary is listed as an important bird area (IBA) IN122. and is a proposed Ramsar site. At least 320 species of resident and migratory birds inhabit the sanctuary. Migratory birds from Siberia form part of its rich avian fauna. Vulnerable bird species here include the Indian skimmer, sarus crane, Pallas's fish eagle and Indian courser. The pallid harrier and lesser flamingo are near threatened. Winter visitors include black-bellied terns, red-crested pochard, ferruginous pochard and bar-headed goose. Other species include great thick-knee, greater flamingos,