Family: Anatidae (Ducks, Geese, Swans)

Authority: (Van Beneden, 1875)

Red List Category:

Justification of Red List category
This species was previously widespread throughout the eastern drylands of New Zealand's North and South Islands. It is only known from subfossil bones and the date of extinction is unknown, but over-hunting and predation by rats were likely responsible (Hume 2017). A first approximation suggests it became extinct some time between 1250 and 1860, but was likely extinct by the time of European contact in the late 18th century (Holdaway et al. 2002).

Population size: unknown

Population trend:

Country endemic: no