The lakes provide habitat for heron, coot, tufted duck, pochard, wigeon and great-crested grebe. Other wintering waterfowls are coot, cormorant, goldeneye, mallard, pochard, teal, and tufted duck. At Roundhouse Lake common visitors are wigeon, red-crested pochard, goldeneye, pochard and tufted duck. In winter brambling, fieldfare, wigeon, gadwall, pochard and teal may be sighted. The Baer's pochard, ring-necked duck, and American wigeon have also been recorded. Red-crested pochard and ruddy duck are occasional visitors. Winter visitors include black-bellied tern, red-crested pochard, ferruginous pochard and bar-headed goose. In the middle of December 2014 there were 56,798 heron, 51,713 coot and 43,938 pochard. The red-crested pochard ("Netta rufina") is a large diving duck. The redhead is a pochard, a diving duck specially adapted to foraging underwater. Wing does not have the dark trailing edge of the red-crested pochard. No pochard has a metallic coloured speculum, something that is characteristic of other ducks. Nationally important wintering populations are supported such as gadwall, shoveller and pochard. A duck, Baer's pochard, was also named after him. The rosy-billed pochard is endemic to South America.