Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has been downlisted from Near Threatened because its population is estimated to be larger than previously thought and because there are not thought to be any plausible threats that could cause a rapid or very rapid decline in a short time period. It is now listed as Least Concern on the basis that it is not thought to approach the thresholds for Vulnerable under any of the Red List criteria.
18400-23700 mature individuals
Distribution size (breeding/resident):
Land-mass type - shelf island - Continental islands include all other islands or island groups. Generally they were once part of continents and lie on a continental shelf of < 200 m sea depth.
Realm - Nearctic - realm
USFWS - Bird of Conservation Concern - Species listed by US Fish and Wildlife Service
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome