Studies of waterfowl (Anatidae) in north Queensland. 8. Moults of the grey teal (Anas gibberifrons gracilis Buller)

Abstract

The moults of the grey teal (Anas gibberifrons gracilis Buller) have been investigated in captivity and in a field population, with similar results. In north Queensland there was a postnatal, a postjuvenile and an immature moult in each young bird, and a postnuptial and a prenuptial moult in each adult bird in 1968, a year of heavy rainfall and subsequent flooding, and in 1969, a year of average rainfall.