Family: Procellariidae (Petrels, Shearwaters)

Authority: (Schlegel, 1863)

Red List Category

Criteria: B2ab(v)

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Justification of Red List category
This species has been listed as Endangered because it has a very small occupied breeding range, and there is now evidence that chick predation by introduced mice is causing very low breeding success and is likely to be causing the population to decline. It has not been recorded from Tristan de Cunha for 35 years, and, were it to be confirmed as locally extinct there, it may qualify for uplisting to Critically Endangered.

Population size: 1800000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 23,300,000 km²

Country endemic: yes

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