Balearic Shearwater Puffinus mauretanicus

Family: Procellariidae (Petrels, Shearwaters)

Authority: Lowe, 1921

Red List Category

Criteria: A4bcde

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Justification of Red List category
This species has a small breeding range and a relatively small population which is undergoing an extremely rapid decline, largely related to low adult (and immature) survival rates. Main threats are fisheries by-catch at sea and predation at breeding colonies by introduced mammals. Population models predict over 90% decline in three generations with an average extinction time of about 60 years, hence qualifying the species as Critically Endangered.

BirdLife Species Guardian: SPEA and SEO

Population size: 19000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 7,120,000 km2

Country endemic: yes

Land-mass type - oceanic island
Realm - Palearctic
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2023) Species factsheet: Puffinus mauretanicus. Downloaded from on 01/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 01/12/2023.