Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has been uplisted from Near Threatened because, although its population is estimated to be larger than previously thought, it is believed to be in slow decline owing mainly to habitat loss and degradation caused by the gradual expansion of subsistence agriculture. It is therefore listed as Vulnerable on the basis that its population is small and declining.
3300 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