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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') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Whooper Swan Cygnus cygnus	LC	breeding	2004	present	A4i
Bar-headed Goose Anser indicus	LC	breeding	2004	present	A4i
Swan Goose Anser cygnoid	EN	breeding	2004	present	A1, A4i
Common Goldeneye Bucephala clangula	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
Demoiselle Crane Anthropoides virgo	LC	breeding	2004	present	A4i
White-naped Crane Grus vipio	VU	breeding	2004	present	A1
Common Crane Grus grus	LC	breeding	2004	present	A4i
Hooded Crane Grus monacha	VU	breeding	2004	present	A1
Great Bustard Otis tarda	EN	breeding	2004	present	A1
Dalmatian Pelican Pelecanus crispus	NT	breeding	2004	present	A1, A4i
Northern Lapwing Vanellus vanellus	NT	breeding	2004	present	A4i
Relict Gull Larus relictus	VU	breeding	2009	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	min 20,000 individuals	A4iii

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

Year	Protected Area	Designation	% overlap with IBA
1998	Ogii Nuur	Ramsar Site, Wetland of International Importance	17

Habitat1	Habitat detail	% of IBA
Grassland	Steppe	-
Wetlands (inland)		-

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Ogii Lake (Mongolia). Downloaded from https://datazone.birdlife.org/site/factsheet/ogii-lake-iba-mongolia on 22/11/2024.