The Grey Teal, Anas gracilis is a common native in New Zealand. It is a mottled brown duck with white and green flashes on its wings. The male and female Grey Teal share the same coloration, in contrast to the related Chestnut Teal, whose male and female are strikingly different. The Grey Teal has almost identical coloration to the female Chestnut Teal and the Grey can only be distinguished by its lighter colored neck and paler face. Juveniles are paler than adults, especially on the head. This is a vocal duck, especially at night. The male gives a soft preep, and the female has a loud quack. The Grey Teal is a gregarious species. In Australia it is nomadic, rapidly colonizing suitable habitat following rain. In 1957, large numbers fled Australia, moving to New Zealand to escape drought. These were photographed at the Otorohanga Ziwi House Zoo.