Ruddy Ducks are small and stout freshwater diving ducks with broad, short wings and narrow, stiff tails. The male Ruddy Duck has a bright chestnut body, black crown, white cheeks and blue bill. They swim buoyantly, often with the tail cocked up, and can also gradually go underwater without diving. They hardly ever leave the water, and are very ungainly on land. This species is subject to a Government-led eradication programme. As a result, the UK population of Ruddy Ducks now stands at less than 100 birds.