Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species is classified as Endangered because it has a very small population restricted to two tiny islands. Although the population on Fonualei, where it was recently introduced, is likely to be stable the population on Niuafo'ou is suspected to be undergoing a continuing decline, owing to egg harvesting and predation (Baker et al.
in press). If a population on the larger island of Late could also be established, then downlisting to Vulnerable may be warranted.
450-650 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 -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome