Family: Anatidae (Ducks, Geese, Swans)

Authority: Buller, 1869

Red List Category

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Justification of Red List category
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence under 20,000 km² combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population size is very large, and hence does not approach the thresholds for Vulnerable under the population size criterion (under 10,000 mature individuals with a continuing decline estimated to be over 10% in ten years or three generations, or with a specified population structure). The population trend appears to be fluctuating, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (over 30% decline over ten years or three generations). For these reasons the species is evaluated as Least Concern.

Population size: 147000-747000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 22,400,000 km²

Country endemic: no

Attributes
Realm - Oceanian
IUCN System - Freshwater
IUCN System - Marine