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 |
|---|---|---|---|---|
| Japanese Murrelet Synthliboramphus wumizusume | VU | breeding (2014) | min 61 nests | A1, A4ii |
| Year | Protected Area | Designation (management category) | % coverage of IBA |
|---|---|---|---|
| 1964 | Makiyama | 都道府県指定鳥獣保護区 (IV) | 5 |
| 1974 | Nippokaigan | 国定公園 (V) | 13 |
| 2010 | Birojima | 国指定鳥獣保護区 (IV) | 3 |
| 2013 | Common fishery right area(Miyazaki) | 共同漁業権区域 (VI) | 21 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Marine Neritic | 100 |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Birojima islet - Marine (Japan). Downloaded from
https://datazone.birdlife.org/site/factsheet/birojima-islet--marine-iba-japan on 12/01/2025.