Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
Although current population trends are assumed to be stable, this species qualifies as Vulnerable because it has a very small range, breeding on four islands, although largely confined to just one, with a fifth mainland population comprising only hybrid birds. It is therefore highly susceptible to stochastic effects and human impacts.
27200 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 - Afrotropical - realm
Realm - Neotropical - realm
Realm - Oceanic - realm
IUCN Ecosystem -- Marine biome
IUCN Ecosystem -- Terrestrial biome