cross between a mallard and domestic duck
green-winged teal (species of duck, Anas crecca)
common scoter (Melanitta nigra); black scoter (Melanitta americana)
northern pintail (Anas acuta)
mallard (Anas platyrhynchos); mallard duck
spot-billed duck (Anas poecilorhyncha)
Eurasian wigeon (Anas penelope)
any duck with white specula (bright patches on the wings)
paradise shelduck (Tadorna variegata); paradise duck; pūtangitangi
falcated teal (Mareca falcata); falcated duck
Fuegian steamer duck (Tachyeres pteneres); Magellanic flightless steamer duck
Auckland teal (Anas aucklandica); Auckland Islands teal
common goldeneye (species of duck, Bucephala clangula)
northern shoveler (species of duck, Anas clypeata); northern shoveller
ruddy shelduck (Tadorna ferruginea); ruddy sheldrake
long-tailed duck (Clangula hyemalis); old-squaw; hareld; old injun; oldwife
greater scaup (species of diving duck, Aythya marila)
common shelduck (Tadorna tadorna)
Falkland steamer duck (Tachyeres brachypterus)
Baikal teal (species of dabbling duck, Anas formosa)
harlequin duck (Clangula hyemalis or Histrionicus histrionicus)