Family: Podicipedidae (Grebes)

Authority: Gray, 1843

Red List Category

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Justification of Red List category
This species has a large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <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 trend appears to be increasing, and hence does not approach the thresholds under the population trend criterion (>30% decline over ten years or three generations). The population size is relatively small, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Population size: 1000-5000, 2000-4000 mature individuals

Population trend: increasing

Extent of occurrence (breeding/resident): 260,000 km²

Country endemic: yes

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