Within Australia, there are 28 members in this group of fully web-footed waterfowl, including nine endemics, the Blue-billed Duck Oxyura australis, Pink-eared Duck Malacorhynchus membranaceus, Cape Barren Goose Cereopsis novaehollandiae, Black Swan Cygnus atratus, Australian Shelduck Tadorna tadornoides, Chestnut Teal Anas castanea, Freckled Duck Stictonetta naevosa, Musk Duck Biziura lobata and the Australian Wood Duck Chenonetta jubata. The Northern Mallard A. platyrhynchos is introduced and both the Mute Swan Cygnus olor and the Canada Goose Branta canadensis are self-introduced vagrants from populations occurring in New Zealand. Of the 19 other species, 13 are non-endemic breeding residents, while the remaining six have been recorded as vagrants.
Species such as the Musk Duck, Blue-billed Duck, Hardhead, Green Pygmy-goose and Wandering Whistling-Duck, obtain some food by diving below the surface of the water. The Plumed Whistling-Duck, Australian Wood Duck, Australian Shelduck, Radjah Shelduck and vagrant Paradise Shelduck are seldom seen in the water, preferring to wade through the shallows or graze in grasslands. The Australian Shoveler, Northern Shoveler and Pink-eared Duck have specialist bills that they use to filter through the water for microscopic aquatic animals and plants. The remaining species follow the more traditional method of upending in the water and feeding on a variety of plants and animals from the bottom of their shallow wetland homes.