Mouth of Yeya river

IBA Criteria

Year of most recent IBA criteria assessment: 2009

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Red-crested Pochard Netta rufina LC breeding 1996-2006 250-300 breeding pairs A4i, B1i
Common Pochard Aythya ferina VU breeding 2004-2006 1,000 breeding pairs B2
Glossy Ibis Plegadis falcinellus LC breeding 1996-2006 80-120 breeding pairs B2
Black-winged Pratincole Glareola nordmanni NT breeding 1996-2006 10-11 breeding pairs A1
Slender-billed Gull Larus genei LC passage 2006 3,000 individuals A4i, B1i
Whiskered Tern Chlidonias hybrida LC breeding 1996-2006 150-250 breeding pairs B2

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)
2006 medium favourable negligible
Was the whole site covered? No State assessed by Population
Accuracy of information poor

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification annual & perennial non-timber crops - agro-industry farming happening now some of area/population (10-49%) slow but significant deterioration medium
Biological resource use hunting & collecting terrestrial animals - intentional use (species being assessed is the target) happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications dams & water management/use - abstraction of surface water (agricultural use) happening now some of area/population (10-49%) no or imperceptible deterioration low

Condition of key/trigger populations (state)
Scientific Common TargetPop ActualPop Units Remaining Result
Himantopus himantopus 30 30 breeding pairs 100 favourable
Glareola nordmanni Black-winged Pratincole 11 10 breeding pairs 91 favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Little/none of site covered (<10%) No management planning has taken place Very little or no conservation action taking place negligible
For more information about IBA monitoring please click here


IUCN Habitat Habitat detail Extent (% of site)
Wetlands (inland) Rivers and streams, Fens, transition mires and springs, Standing freshwater -
Coastline Mud flats & sand flats -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
fisheries/aquaculture -
hunting -
For further information about the land use classification please click here.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Mouth of Yeya river. Downloaded from on 25/06/2022.