Mascarene Petrel Pseudobulweria aterrima

Family: Procellariidae (Petrels, Shearwaters)

Authority: (Bonaparte, 1857)

Red List Category

Criteria: C2a(ii)

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Justification of Red List category
This species is classified as Critically Endangered because it is assumed to have an extremely small breeding population and to be undergoing a continuing decline owing to predation and light-induced mortality. Effective conservation measures are urgently needed.

BirdLife Species Guardian: Société d'études ornithologiques de la Réunion (SEOR)

Population size: 100-200

Population trend: Decreasing

Extent of occurrence (breeding/resident): 77,000 km2

Country endemic: Yes

Land-mass type - oceanic island
Realm - Afrotropical
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2023) Species factsheet: Pseudobulweria aterrima. Downloaded from on 01/10/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 01/10/2023.