Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
The last well-documented sighting of this species was in 1994 (Clement and Hathway 2000), with an unconfirmed report in 1988, and no subsequent records despite further surveys in most of the historical range in Kamako'u-Pelekunu. It may have been driven extinct by disease spread by introduced mosquitoes, and as a result of habitat destruction. However, it cannot yet be presumed to be Extinct because the remote Oloku'i Plateau has not been resurveyed recently and could conceivably still harbour some birds. Any remaining population is likely to be tiny, and for these reasons it is treated as Critically Endangered (Possibly Extinct).
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