Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has only been recorded with certainty once in the last 50 years (in 1995), and it has declined drastically since 1930, possibly through habitat loss, hunting and predation by introduced rats. However, it may remain extant since there have also been a number of unconfirmed reports, and further intensive surveys are required. Any remaining population is likely to be tiny and continuing to decline, and for these reasons it is treated as Critically Endangered.
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