Hakata bay

IBA Criteria

Year of most recent IBA criteria assessment: 2004

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Black-faced Spoonbill Platalea minor EN winter 2003 present A1, A4i
Whimbrel Numenius phaeopus LC passage 2003 present A4i
Red-necked Stint Calidris ruficollis NT passage 2003 present A4i
Dunlin Calidris alpina LC winter 2003 present A4i
Terek Sandpiper Xenus cinereus LC passage 2003 present A4i
Grey-tailed Tattler Tringa brevipes NT passage 2003 present A4i
Common Greenshank Tringa nebularia LC winter 2003 present A4i
Saunders's Gull Saundersilarus saundersi VU winter 2003 present A1
Pleske's Grasshopper-warbler Helopsaltes pleskei VU breeding 2003 present A1

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 medium near favourable low
Was the whole site covered? No State assessed by Habitat
Accuracy of information -

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification annual & perennial non-timber crops - scale unknown/unrecorded likely in long term (beyond 4 years) majority/most of area/population (50-90%) slow but significant deterioration medium
Human intrusions and disturbance recreational activities likely in long term (beyond 4 years) whole area/population (>90%) slow but significant deterioration medium

Condition of habitat (state)
Habitat Habitat Detail Reference Area (ha) Actual Area (ha) % of habitat remaining % of carrying capacity (overall) Result
Wetlands (inland) 0 0 good (> 90%) moderate (70-90%) near favourable

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Little/none of site covered (<10%) A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species Some limited conservation initiatives are in place low
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Wajiro higata 国指定鳥獣保護区 254 protected area contained by site 0
Genkai 国定公園 10,158 protected area overlaps with site 9,000
Fukuoka shi 都道府県指定鳥獣保護区 26,417 protected area overlaps with site 0
Common fishery right area(Fukuoka) 共同漁業権区域 127,630 protected area overlaps with site 0


IUCN Habitat Habitat detail Extent (% of site)
Marine Intertidal -
Wetlands (inland) Rivers and streams, Permanent swamps -
Marine Neritic -
For further information about the habitat classification please click here.

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Hakata bay. Downloaded from on 23/03/2023.