Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species is listed as Vulnerable because it has a small range, which is suspected to be undergoing a continuous and rapid decline, largely because of infrastructure and residential development, disturbance at its nesting colonies, exploitation, and marine oil pollution.
220000 mature individuals
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 - Afrotropical - realm
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome