Family: Alcidae (Auks)

Authority: (Vigors, 1829)

Red List Category

Criteria: A4ace

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

Justification of Red List category
This species has been downlisted from Critically Endangered because the rate of population decline that it is experiencing is suspected to be less rapid than previously thought. It is now listed as Near Threatened because it is nevertheless suspected to be undergoing a moderately rapid decline. Further studies are required to quantify the overall rate of decline and identify the most significant threats to the species.

Population size: 32000-55000 mature individuals

Population trend: decreasing

Extent of occurrence (breeding/resident): 5,940,000 km²

Country endemic: no

Attributes
Realm - Nearctic
Realm - Palearctic
Land-mass type - oceanic island
Land-mass type - shelf island
Land-mass type - continent
USFWS - Bird of Conservation Concern
IUCN System - Terrestrial
IUCN System - Marine