Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species has been downlisted from Vulnerable as analysis of recent data suggests that its population is not undergoing rapid on-going declines and is either stable or increasing. However, modelling of the likely effects of mortality caused by longline fishing fleets, combined with potential losses to breeding colonies from sea-level rise and storm surges, suggests it is appropriate to precautionarily predict a moderately rapid population decline over the next three generations (56 years), hence its classification as Near Threatened rather than Least Concern.
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 - Indomalayan - realm
Realm - Nearctic - realm
Realm - Oceanic - realm
Realm - Palearctic - realm
USFWS - Bird of Conservation Concern - Species listed by US Fish and Wildlife Service
IUCN Ecosystem -- Marine biome