These are gregarious birds, forming large flocks in winter, often mixed with other diving ducks, such as other pochards. They feed mainly by diving or dabbling. They eat aquatic plants, and typically upend for food more than most diving ducks.Red-crested pochards build a nest by the lakeside among vegetation and lay 8-12 pale green eggs. The birds' status in the British Isles is much confused due to the fact that there have been many escapes and deliberate releases over the years, as well as natural visitors from the continent. However, it is most likely that they are escapees that are now breeding wild and have built up a successful feral population. They are most numerous around areas of England including Gloucestershire, Oxfordshire and Northamptonshire. Wild birds occasionally turn up at places such as Abberton Reservoir, Essex.