Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has a small, fragmented and declining range and population, and consequently qualifies as Vulnerable. It has declined massively since the nineteenth century, but the rate of decline has slowed with its increasing rarity.
1500-7000 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 - Neotropical - realm
IUCN Ecosystem -- Terrestrial biome