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Year of most recent IBA criteria assessment: 2016

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Emperor Goose Anser canagicus	NT	winter	2004	present	A4i
Common Eider Somateria mollissima	NT	winter	1992-1993	min 1,500 individuals	A4i
Common Eider Somateria mollissima	NT	breeding	1986-1994	min 1,000 individuals	A1
Steller's Eider Polysticta stelleri	VU	winter	2013	min 2,956 individuals	A1, A4i
Harlequin Duck Histrionicus histrionicus	LC	breeding	1986-1994	min 9,000 individuals	A4i
Harlequin Duck Histrionicus histrionicus	LC	winter	1992-1993	18,000-19,000 individuals	A4i
Laysan Albatross Phoebastria immutabilis	NT	non-breeding	2004	200-1,000 individuals	A1
Short-tailed Albatross Phoebastria albatrus	VU	non-breeding	2004	20-100 individuals	A1
Northern Fulmar Fulmarus glacialis	LC	breeding	1992-1994	min 386,200 individuals	A4ii
Short-tailed Shearwater Ardenna tenuirostris	LC	non-breeding	2004	min 1,000,000 individuals	A4ii
Pelagic Cormorant Urile pelagicus	LC	breeding	1993-1994	min 6,200 individuals	A4i
Red-faced Cormorant Urile urile	LC	breeding	1993-1994	min 1,668 individuals	A4i
Red-legged Kittiwake Rissa brevirostris	VU	breeding	1993-1994	min 32,338 individuals	A1, A4i
Glaucous-winged Gull Larus glaucescens	LC	breeding	1993-1994	min 10,240 individuals	A4i
Tufted Puffin Fratercula cirrhata	LC	breeding	1988-1994	min 127,000 individuals	A4ii
Whiskered Auklet Aethia pygmaea	LC	resident	2004	20,000-100,000 individuals	A4ii
Pigeon Guillemot Cepphus columba	LC	breeding	1993-1994	min 3,260 individuals	A4ii
A4iii Species group - seabirds	n/a	breeding	1992-1994	min 386,200 individuals	A4iii
A4iii Species group - waterbirds	n/a	breeding	1992-1994	min 34,000 individuals	A4iii

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Komandorsky / Commander Islands	Zapovednik	3,648,679	protected area contained by site	0
Komandorsky	Zapovednik	3,648,679	is identical to site	3,648,679
Commander Islands	UNESCO-MAB Biosphere Reserve	3,648,679	protected area contained by site	0
Commander Islands	UNESCO-MAB Biosphere Reserve	3,648,679	is identical to site	3,648,679

IUCN Habitat	Habitat detail	Extent (% of site)
Coastline	Sea cliffs and rocky shores	-
Grassland	Tundra, Edaphic grassland	-
Sea		-

For further information about the habitat classification please click here.

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Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Commander Islands. Downloaded from http://www.birdlife.org on 12/08/2022.