VU
Steller's Eider Polysticta stelleri



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Red List Category

Criteria: A2bcd+3bcd+4bcd

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Justification of Red List category
This species is listed as Vulnerable because it is undergoing a rapid population reduction, particularly in the key Alaskan populations. Further studies are needed to determine the causes of these declines, and whether some populations may have shifted to unsurveyed areas within the range.



Population size: mature individuals

Population trend: Decreasing

Distribution size (breeding/resident): 968,000 km2

Country endemic: No

Attributes
Land-mass type - continent - Continents are land masses > bigger than Australia (=7,682,300 sq km).
Realm - Nearctic - realm
Realm - Palearctic - realm
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Marine biome

Recommended citation
BirdLife International (2016) Species factsheet: Polysticta stelleri. Downloaded from http://www.birdlife.org on 04/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 04/12/2016.