Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has a small population which breeds within a tiny area of occupancy on just one island, and which is continuing to decline. For these reasons it is listed as Critically Endangered.
2400-4800 mature individuals
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 - Indomalayan - realm
Realm - Palearctic - realm
Realm - Oceanic - realm
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome