Data Zone
The site was identified as internationally important for bird conservation in 2016 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.
Populations meeting IBA criteria ('key species') at the site:| Species | Red List | Season (year/s of estimate) | Size | IBA criteria |
|---|---|---|---|---|
| Matsudaira's Storm-petrel Hydrobates matsudairae | VU | breeding (2007) | min 100,000 breeding pairs | A1, A4ii |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 2002 | Common fishery right area(Tokyo) | 共同漁業権区域 (VI) | 100 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Neritic | 100 |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Kazan-Retto Islands - Marine (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/kazan-retto-islands--marine-iba-japan on 13/01/2025.