The site was identified as important in 2016 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.
Populations meeting IBA criteria ('trigger species') at the site:Species | Red List1 | Season | Year(s) | Size | IBA criteria |
---|---|---|---|---|---|
Streaked Shearwater Calonectris leucomelas | NT | breeding | 1974 | min 140,000 individuals | A4ii |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2016) may differ.
Year | Protected Area | Designation | % overlap with IBA |
---|---|---|---|
1973 | Kusagakijima | 国指定鳥獣保護区 | <1 |
Habitat1 | Habitat detail | % of IBA |
---|---|---|
Marine Neritic | 100 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Kusagaki islets - Marine (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/kusagaki-islets--marine-iba-japan on 27/11/2024.