Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has been downlisted to Vulnerable because although its population has undergone a rapid decline over the past three generations and it is restricted to just three locations, the population has been increasing since 2000 owing to intensive conservation action including two translocations, such that the decline over the past three generations has no longer been very rapid.
1100 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
IUCN Ecosystem -- Marine biome