Data Zone
The site was identified as internationally important for bird conservation in 2022 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 |
|---|---|---|---|---|
| Long-tailed Duck Clangula hyemalis | VU | winter (2009–2021) | 686–25,727 individuals | A1, B3a, C1, C3 |
| Long-tailed Duck Clangula hyemalis | VU | passage (2008–2011) | 311–54,810 individuals | A1, B3a, C1, C3 |
| Velvet Scoter Melanitta fusca | VU | winter (2009–2021) | 55–504 individuals | A1, C1 |
| Velvet Scoter Melanitta fusca | VU | passage (2008) | min 2,768 individuals | A1, C1 |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Ruhnu (Estonia). Downloaded from
https://datazone.birdlife.org/site/factsheet/ruhnu-iba-estonia on 22/01/2025.