MacGillivray's Prion Pachyptila macgillivrayi

Family: Procellariidae (Petrels, Shearwaters)

Authority: (Mathews, 1912)

Red List Category

Criteria: B2ab(v)

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Justification of Red List category
Further research is needed to understand the relative abundance of this newly-recognised species, which has a highly restricted distribution. Nevertheless, although the actual population size and trend remain unknown, it has been demonstrated that it suffered a high chick mortality rate in 2013-2014 and 2014-2015 as a result of chick predation by mice. Because it has a highly restricted breeding range on two islands, and the population is inferred to be declining as a result of invasive species, MacGillivary's Prion is listed as Endangered.

Population size: 100000-1000000

Population trend: Decreasing

Extent of occurrence (breeding/resident): 10,800,000 km2

Country endemic: No

Recommended citation
BirdLife International (2021) Species factsheet: Pachyptila macgillivrayi. Downloaded from http://www.birdlife.org on 04/12/2021. Recommended citation for factsheets for more than one species: BirdLife International (2021) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 04/12/2021.