Chatham Islands Petrel Pterodroma axillaris

Family: Procellariidae (Petrels, Shearwaters)

Authority: (Salvin, 1893)

Red List Category

Criteria: A2be+4be; D2

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Justification of Red List category
This species is listed as Vulnerable because its population has undergone a rapid decline over the past three generations and it is restricted to just three locations, and there are plausible threats that could have a severe impact on the species at these locations. The population has been increasing since 2000 owing to intensive conservation action including two translocations, such that the decline over the past three generations has no longer been very rapid, but it has still likely been >30%.

Population size: 1100 mature individuals

Population trend: increasing

Extent of occurrence (breeding/resident): 46,200,000 km2

Country endemic: yes

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

Recommended citation
BirdLife International (2023) Species factsheet: Pterodroma axillaris. Downloaded from on 05/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 05/12/2023.