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Year of most recent IBA criteria assessment: 2004

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Tundra Swan Cygnus columbianus	LC	breeding	2004	present	A3, A4i
Lesser White-fronted Goose Anser erythropus	VU	breeding	2004	present	A1, A3
Long-tailed Duck Clangula hyemalis	VU	breeding	2004	present	A3, A4i
King Eider Somateria spectabilis	LC	breeding	2004	present	A3, A4i
Steller's Eider Polysticta stelleri	VU	breeding	2004	present	A3, A4i
Baikal Teal Sibirionetta formosa	LC	breeding	2004	present	A1
Sabine's Gull Xema sabini	LC	breeding	2004	present	A3, A4i
A4iii Species group - waterbirds	n/a	unknown	2004	20,000 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)
Ust'-Lensky	Zapovednik	1,433,000	protected area overlaps with site	0
Lena-Del'ta	Resource Reserve	2,170,522	protected area overlaps with site	2,170,522

IUCN Habitat	Habitat detail	Extent (% of site)
Grassland	Tundra	-
Wetlands (inland)	Estuarine waters	-

For further information about the habitat classification please click here.

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Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Lena delta. Downloaded from http://www.birdlife.org on 17/05/2022.