Family: Anatidae (Ducks, Geese, Swans)

Authority: (Fleming, 1935)

Red List Category

Criteria: D2

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Justification of Red List category
Although this species's population size is increasing, it is restricted to two small subpopulations and the introduction of rats to Campbell Island or Whenua Hou could lead to rapid declines and push the species to Critically Endangered in a very short time. For this reason, the species is listed as Vulnerable.

Population size: unknown

Population trend: stable

Extent of occurrence (breeding/resident): 7,300 km²

Country endemic: yes

Attributes
Land-mass type - oceanic island
Realm - Oceanian
IUCN System - Terrestrial