Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has an extremely small population and is now known to breed at only one site, where it appears to have undergone an extremely rapid recent decline. Reasons for this recent decline are unclear but a key threat is thought to be fragmentation and degradation of overwintering habitat. It is therefore classified as Critically Endangered. Extinction in the wild has been predicted to take place within 3-5 years, and it is planned for further individuals to be taken from the wild in order to bolster the captive population for captive breeding and eventual release.
1-49 mature individuals
Distribution size (breeding/resident):
Land-mass type - shelf island - Continental islands include all other islands or island groups. Generally they were once part of continents and lie on a continental shelf of < 200 m sea depth.
Realm - Oceanic - realm
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome