Bryan's Shearwater Puffinus bryani

Family: Procellariidae (Petrels, Shearwaters)

Authority: Pyle, Welch & Fleischer, 2011

Red List Category

Criteria: C2a(i,ii)

Click here for more information about the Red List categories and criteria

Justification of Red List category
This recently described species is listed as Critically Endangered because it is thought to have an extremely small population, which is inferred to be declining as a result of predation by introduced mammals.

Population size: 50-249 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 3,110,000 km2

Country endemic: no

Recommended citation
BirdLife International (2023) Species factsheet: Puffinus bryani. Downloaded from on 06/12/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 06/12/2023.