Family: Procellariidae (Petrels, Shearwaters)

Authority: Townsend, 1890

Red List Category

Criteria: B2ab(i,ii,iii,v)

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Justification of Red List category
This species has been extirpated from two islands, and breeding is now restricted to an extremely small area on one island, where invasive species are contributing to a population decline. It therefore qualifies as Critically Endangered.

Population size: 250-999 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 3,200,000 km²

Country endemic: yes

Attributes
Land-mass type - oceanic island
Realm - Nearctic
Realm - Neotropical
IUCN System - Marine
IUCN System - Terrestrial