Family: Alcidae (Auks)

Authority: (Linnaeus, 1758)

Red List Category

Criteria: A4abcde

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Justification of Red List category
This species has experienced rapid declines across most of its European range. Population trends outside Europe are unknown. Extrapolated over three generation lengths and allowing for uncertainty, the population is thought to be declining at a rate sufficient to be listed as Vulnerable. Should population trends become less uncertain both within and outside its European range it may merit uplisting or downlisting.

Population size: 12000000-14000000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 20,800,000 km²

Country endemic: no

Attributes
Realm - Nearctic
Realm - Palearctic
IUCN Ecosystem -- Terrestrial biome
IUCN Ecosystem -- Marine biome