Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species qualifies as Critically Endangered because the lack of recent records, despite considerable survey effort, suggests it has a tiny population which is presumably continuing to decline as a result of predation from introduced rats and loss of habitat.
1-49 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