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Location Mongolia, Bulgan
Central coordinates 104o 3.00' East  47o 51.00' North
IBA criteria A1, A4i
Area 50,200 ha
Altitude 1,088 - 1,164m
Year of IBA assessment 2009

Site description Dashinchilen Bayan Lake is a small saline steppe lake surrounded by extensive steppe grassland. The southeastern side of the lake is marshy with reeds and tall grasses. After heavy rain, the whole valley becomes flooded. The main land use is livestock grazing. A highway passes just south of the lake. A small freshwater lake to the south-east is used by local people and livestock. The water level in Dashinchilen Bayan Lake has decreased signifi cantly because of drought. Overgrazing is a serious threat to surrounding steppe habitats.

Key Biodiversity The site is used by the following Globally Threatened species: Swan Goose Anser cygnoides (EN); White-naped Crane Grus vipio (VU); and Great Bustard Otis tarda (VU). The site also supports at least 1% of the flyway populations of the following congregatory waterbird species: Ruddy Shelduck Tadorna ferruginea; Common Goldeneye Bucephala clangula; Demoiselle Crane Anthropoides virgo; Common Crane Grus grus; Northern Lapwing Vanellus vanellus; Pied Avocet Recurvirostra avosetta; Pacific Golden Plover Pluvialis fulva; and Herring Gull Larus argentatus.

Non-bird biodiversity: Nationally threatened mammalian species, such as Red Fox Vulpes vulpes, Corsac Fox V. corsac, Grey Wolf Canis lupus and Siberian Marmot Marmota sibirica (EN), can be seen around the lake.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Swan Goose Anser cygnoid breeding  2004  present  A1  Vulnerable 
Ruddy Shelduck Tadorna ferruginea 2004  present  A4i  Least Concern 
Common Goldeneye Bucephala clangula breeding  2004  present  A4i  Least Concern 
Great Bustard Otis tarda breeding  2004  present  A1  Vulnerable 
White-naped Crane Antigone vipio breeding  2004  present  A1  Vulnerable 
Demoiselle Crane Anthropoides virgo breeding  2004  present  A4i  Least Concern 
Common Crane Grus grus breeding  2004  present  A4i  Least Concern 
Pied Avocet Recurvirostra avosetta 2009  present  A4i  Least Concern 
Northern Lapwing Vanellus vanellus 2004  present  A4i  Near Threatened 
Pacific Golden Plover Pluvialis fulva 2009  present  A4i  Least Concern 
Larus argentatus 2009  present  A4i  Not Recognised 


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

Protection status Unprotected

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Dashinchilen Bayan Lake. Downloaded from on 26/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife