Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species is listed as Vulnerable because it has a very small breeding range which renders it susceptible to stochastic effects and human impacts. Population trends are unknown, but are assumed to be more or less stable.
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 -- Marine biome