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The site was identified as important in 2009 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Swan Goose Anser cygnoid	VU	breeding	2004	present	A1, A4i
Common Shelduck Tadorna tadorna	LC	breeding	2004	present	A4i
Ruddy Shelduck Tadorna ferruginea	LC	breeding	2004	present	A4i
Baikal Teal Sibirionetta formosa	LC	passage	2004	present	A1
Great Crested Grebe Podiceps cristatus	LC	breeding	2004	present	A4i
Siberian Crane Leucogeranus leucogeranus	CR	passage	2004	present	A1, A3
White-naped Crane Grus vipio	VU	breeding	2004	present	A1, A3
Great Bustard Otis tarda	VU	breeding	2004	present	A1, A3
Grey Heron Ardea cinerea	LC	breeding	2004	present	A4i
Great Cormorant Phalacrocorax carbo	LC	breeding	2004	present	A4i
Northern Lapwing Vanellus vanellus	NT	breeding	2004	present	A4i
Relict Gull Larus relictus	VU	breeding	2004	present	A1
Pallas's Fish-eagle Haliaeetus leucoryphus	EN	breeding	2004	present	A1
Lesser Kestrel Falco naumanni	LC	breeding	2004	present	A1
A4iii Species group - waterbirds	n/a	unknown	2004	20,000 individuals	A4iii

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2009).

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Lake Buir and its surrounding wetlands	Ramsar Site, Wetland of International Importance	104,000	protected area contains site	43,200

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Wetlands (inland)		-
Grassland	Steppe	-

For more information about the IUCN Habitat classification, please click here.

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Buir Lake. Downloaded from http://datazone.birdlife.org/site/factsheet/buir-lake-iba-mongolia on 24/09/2023.