When it comes to spectacular movements, the Grey Teal is unsurpassed by any other Australian waterfowl. Responding to rainfall, or lack of it, they cover vast distances in search of suitable water, and occur on every type of wetland. When the water dries up, they disperse to look for more, turning up almost anywhere, including at waterholes in the desert. These extensive travels have also taken some Grey Teal beyond Australia's shores to Indonesia, New Guinea and New Zealand, and even to subantarctic Macquarie Island.