Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species qualifies as Endangered because it has a very small population, and almost certainly only now occurs on only one very small island. Although it may currently be increasing there owing to a cessation of mining activities and hunting, it has a very small population and could decline rapidly in the near future owing to habitat destruction, or if Swamp Harrier Circus approximans
colonises the island. Confirmation that the population is larger than previously thought, and further clarification of future potential threats, may show that the species warrants downlisting to a lower category of threat.
100-500 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