The site was identified as important in 1994 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|
|Little Bustard Tetrax tetrax||NT||winter||1972||430 individuals||A1, B2|
|Northern Lapwing Vanellus vanellus||NT||winter||1970-1977||3,000 individuals||A4i, B1i|
|Whiskered Tern Chlidonias hybrida||LC||breeding||1977||150 breeding pairs||B1i|
The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (1994).
|Habitat (IUCN level 1)||Habitat detail||Extent (% of site)|
|Land-use||Extent (% of site)|
BirdLife International (2023) Important Bird Area factsheet: Lake Bibishervan and Lake Eymar. Downloaded from http://datazone.birdlife.org/site/factsheet/lake-bibishervan-and-lake-eymar-iba-iran-islamic-republic-of on 27/09/2023.