Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species qualifies as Vulnerable because it has a very small population and is confined to just one tiny island. Any indication of a decline would warrant uplisting the species to a higher threat category.
600-1700 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 -- Terrestrial biome