Family: Procellariidae (Petrels, Shearwaters)

Authority: Mathews, 1934

Red List Category

Criteria: D

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Justification of Red List category
This species qualifies as Endangered because it has an extremely small population breeding on six cliff ledges in the central mountain massif of Madeira. 

Population size: 160 mature individuals

Population trend: stable

Extent of occurrence (breeding/resident): 36,900,000 km²

Country endemic: yes

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