Family: Procellariidae (Petrels, Shearwaters)

Authority: Mathews, 1912

Red List Category

Criteria: B2ab(iii)

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Justification of Red List category
Although this species is believed to have a stable population, it suffered a historical decline in range and population size. It qualifies as Endangered because breeding is now restricted to just two colonies, which remain vulnerable to feral pigs that occur in adjoining areas of the Kaikoura Mountains. 

Population size: unknown

Population trend: stable

Extent of occurrence (breeding/resident): 16,700,000 km²

Country endemic: yes

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