White-chinned Petrel Procellaria aequinoctialis

Family: Procellariidae (Petrels, Shearwaters)

Authority: Linnaeus, 1758

Red List Category

Criteria: A4bcde

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Justification of Red List category
This species is classified as Vulnerable because of suspected rapid declines, although almost no reliable estimates of historical populations exist. Very high rates of incidental mortality in longline fisheries have been recorded in recent decades; the probability that these circumstances will continue, the susceptibility of chicks to predation, and the degradation of breeding habitat indicate that a rapid and on-going population decline is likely. An updated assessment of the population on South Georgia is needed in order to fully assess the overall trend.

Population size: 3000000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 173,000,000 km2

Country endemic: no

Land-mass type - oceanic island
Land-mass type - shelf island
Realm - Afrotropical
Realm - Neotropical
Realm - Oceanic
IUCN Ecosystem -- Marine biome
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2024) Species factsheet: Procellaria aequinoctialis. Downloaded from on 25/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from on 25/02/2024.