Kii Nagashima islets

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
Japanese Woodpigeon Columba janthina NT resident 2004 present A2
Japanese Murrelet Synthliboramphus wumizusume VU breeding 2004 present A1
Pleske's Grasshopper-warbler Locustella pleskei VU breeding 2004 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 high not assessed low
Was the whole site covered? Yes State assessed by unset
Accuracy of information -

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Human intrusions and disturbance recreational activities happening now majority/most of area/population (50-90%) moderate to rapid deterioration high
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species 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
Forest 0 0 - poor (40-69%) very unfavourable

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

Protection status:

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Nishiki 都道府県自然環境保全地域 259 protected area overlaps with site 0
Kiinagashima 国指定鳥獣保護区 6,131 protected area contained by site 7,452
Kihokucho miyamaku ojiro 都道府県指定鳥獣保護区 89 protected area overlaps with site 0
Kihokucho miyama kushimakatsuura 都道府県指定鳥獣保護区 920 protected area overlaps with site 0
Kihokucho kiinagashimaku nagura 都道府県指定鳥獣保護区 7 protected area overlaps with site 0
Common fishery right area(Mie) 共同漁業権区域 97,934 protected area overlaps with site 0


IUCN Habitat Habitat detail Extent (% of site)
Forest -
Coastline Rock stacks and islands -
For further information about the habitat classification please click here.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Kii Nagashima islets. Downloaded from on 21/09/2020.