IBA Criteria

Year of most recent IBA criteria assessment: 1994

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Greylag Goose Anser anser LC winter 1971 1,457 individuals A4i
Common Pochard Aythya ferina VU passage 1969-1970 15,000 individuals A4i
Greater Flamingo Phoenicopterus roseus LC breeding 1969-1974 5,700-9,000 individuals A4i
Siberian Crane Leucogeranus leucogeranus CR passage 1970-1977 56-76 individuals A1, A4i
Grey Heron Ardea cinerea LC winter 1971 263 individuals A4i
Great White Pelican Pelecanus onocrotalus LC winter 1971 1,260 individuals A4i
Black-winged Stilt Himantopus himantopus LC passage 1966-1970 2,500-9,999 individuals A4i
Kentish Plover Charadrius alexandrinus LC breeding 1965-1966 400-800 breeding pairs A4i
Slender-billed Gull Larus genei LC breeding 1965-1972 1,000-2,499 adults A4i
Common Gull-billed Tern Gelochelidon nilotica LC passage 1969-1970 580 individuals A4i
A4iii Species group - waterbirds n/a passage 1969-1970 18,843-35,552 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)
1994 high near favourable medium
Was the whole site covered? Yes State assessed by Habitat
Accuracy of information medium

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification livestock farming and ranching (includes forest grazing) - small-holder grazing, ranching or farming happening now small area/few individuals (<10%) no or imperceptible deterioration low
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now some of area/population (10-49%) very rapid to severe deterioration high
Human intrusions and disturbance war, civil unrest and military exercises past (and unlikely to return) and no longer limiting whole area/population (>90%) moderate to rapid deterioration low
Natural system modifications dams & water management/use - abstraction of surface water (agricultural use) happening now whole area/population (>90%) slow but significant deterioration high

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Wetlands (inland) Standing brackish & salt water 0 0 good (> 90%) moderate (70-90%) unfavourable

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Phoenicopterus roseus Greater Flamingo 5700 5700 individuals 100 favourable
Leucogeranus leucogeranus Siberian Crane 76 5 individuals 7 not assessed

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Whole area of site (>90%) covered by appropriate conservation designation A management plan exists but it is out of date or not comprehensive Some limited conservation initiatives are in place medium
For more information about IBA monitoring please click here

IBA Protection

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Ab-i-Estada Waterfowl Sanctuary 27,000 protected area contained by site 27,000


IUCN Habitat Habitat detail Extent (% of site)
Desert Desert & semi-desert - clay, Desert & semi-desert - salty -
Grassland Alpine, subalpine & boreal -
Wetlands (inland) Rivers & streams, Standing brackish & salt water, Water-fringe vegetation, Temporary water bodies -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
rangeland/pastureland -
military -
hunting -
nature conservation and research -
For further information about the land use classification please click here.

Land ownership

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Ab-i-Istada. Downloaded from on 29/10/2020.