Audouin's Gull Larus audouinii

Family: Laridae (Gulls, Terns, Skimmers)

Authority: Payraudeau, 1826

Red List Category

Criteria: A4b

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Justification of Red List category
Audouin's Gull is undergoing a rapid population reduction following the collapse of the largest breeding colony after several years of very low reproductive output. A reduction in food from fisheries discards coupled with high colony predation is thought to have driven the declines. Despite some of these birds relocating and forming new colonies, overall a rapid decline is believed to have started around 2010. Prior to this populations were increasing, and current population size is estimated to be only around 15% lower than that three generations previously. It is unclear whether the present rate of reduction will persist over the next three generations. As such, the species is assessed as Vulnerable, under criterion A4b.

Population size: unknown

Population trend: decreasing

Extent of occurrence (breeding/resident): 2,200,000 km2

Country endemic: no

Land-mass type - continent
Land-mass type - shelf island
Realm - Afrotropical
Realm - Palearctic
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2023) Species factsheet: Larus audouinii. Downloaded from on 29/11/2023.
Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from on 29/11/2023.