Cackling goose Cackling goose The cackling goose ("Branta hutchinsii") is a North American bird of the genus "Branta" of black geese, which contains species with largely black plumage, distinguishing them from the grey "Anser" species. The black head and neck with white "chinstrap" distinguish this goose from all other geese except the larger Canada goose ("Branta canadensis") and the similarly sized barnacle goose ("B. leucopsis"). There are up to 5 subspecies of cackling goose, of varying sizes and plumage details. The female looks virtually identical but is slightly lighter and has a different voice. Some are hard to distinguish from the Canada
Green pygmy goose Green pygmy goose The green pygmy goose ("Nettapus pulchellus") is a small perching duck which breeds in southern New Guinea and northern Australia. First described in 1842 by the ornithologist John Gould, its specific name is derived from diminutive of the Latin adjective "pulcher" "pretty". It is one of three species in the Afro-Asian genus "Nettapus", an ancient and unusual group of ducks. No subspecies are recognised. Ranging from in length, it is one of the smallest species of duck. It has a wingspan. It has a small bill and compact form. The breeding male has a predominantly dark green