Bolshoy Kak Lake

IBA Criteria

Year of most recent IBA criteria assessment: 2007

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Whooper Swan Cygnus cygnus LC passage 2007 20-1,200 individuals A4i
Red-breasted Goose Branta ruficollis VU passage 2007 1,540-5,020 individuals A1, A4i
Greylag Goose Anser anser LC passage 2007 1,880-5,660 individuals A4i
Greater White-fronted Goose Anser albifrons LC passage 2007 2,500-9,000 individuals A4i
Lesser White-fronted Goose Anser erythropus VU passage 2007 15-37 individuals A1
Common Crane Grus grus LC passage 2007 225-890 individuals A4i
A4iii Species group - waterbirds n/a passage 2007 20,000-49,999 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

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2015 not assessed favourable not assessed
Was the whole site covered? No State assessed by Population
Accuracy of information medium


IUCN Habitat Habitat detail Extent (% of site)
Grassland Steppes & dry calcareous -
Wetlands (inland) Standing brackish & salt water -
Artificial/Terrestrial Arable land -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
agriculture -
rangeland/pastureland -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Bolshoy Kak Lake. Downloaded from on 08/08/2022.