Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
Although able to take advantage of most waterbodies, this species is listed as Vulnerable because its range is very small and susceptible to stochastic events and human activities, given that its wetland habitat is scattered and limited in area, and that only a small number of concentrations are known.
1300-2700 mature individuals
Distribution size (breeding/resident):
Land-mass type - oceanic island - Oceanic islands are islands or island groups that are <200,000 sq km in size and separated from other land masses by >200 m sea depth. Generally Oceanic islands are islands or island groups that are <200,000 sq km in size and separated from other land masses by >200 m sea depth. Generally they have never been connected to a continental area by a land-ridge, and are volcanic in origin.
Realm - Oceanic - realm
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome