Family: Hydrobatidae (Northern Storm-petrels)

Authority: (Townsend, 1890)

Red List Category

Criteria: B2ab(v)

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Justification of Red List category

This species has a very small breeding range, with breeding restricted to two islets off Guadalupe Island, and potentially breeds on the mainland too. Invasive species are known to have had significant impacts on species on Guadalupe Island, and so if the species persists on the main island then the species is likely to be in continuing decline. Therefore, this newly-split species is precautionarily listed as Endangered.

Population size: 2500-9999

Population trend: Decreasing

Extent of occurrence (breeding/resident): 4,950,000 km²

Country endemic: Yes