Data Zone
The site was identified as important in 2005 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 |
|---|---|---|---|---|---|
| Ferruginous Duck Aythya nyroca | NT | breeding | 2004 | 12-30 breeding pairs | A1, C1, C6 |
| Ferruginous Duck Aythya nyroca | NT | passage | 1996 | 48-79 individuals | A1, C1 |
| Common Little Bittern Ixobrychus minutus | LC | breeding | 1996 | 100 breeding pairs | B2, C6 |
| Purple Heron Ardea purpurea | LC | breeding | 1996 | 10 breeding pairs | C6 |
| Pygmy Cormorant Microcarbo pygmaeus | LC | passage | 1996 | 40-180 individuals | A1, C1 |
1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2005) may differ.
| Year | Protected Area | Designation | % overlap with IBA |
|---|---|---|---|
| 2001 | Ribarnitzi Orsoya | Zashtitena Mestnost | 31 |
| 2001 | Orsoya | Protected Landscape | 32 |
| 2005 | Orsoya | Site of Community Importance (Habitats Directive) | 100 |
| 2007 | Ribarnitsi Orsoya | Special Protection Area (Birds Directive) | 100 |
| Habitat1 | Habitat detail | % of IBA |
|---|---|---|
| Wetlands (inland) | Standing freshwater, Water fringe vegetation | 70 |
| Grassland | Humid grasslands | 20 |
| Artificial/Terrestrial | Perennial crops, orchards and groves | 5 |
| Forest | Alluvial and very wet forest | 5 |
| Land use | % of IBA |
|---|---|
| hunting | 70 |
| fisheries/aquaculture | 60 |
| other | 20 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Orsoya Fish-ponds (Bulgaria). Downloaded from
https://datazone.birdlife.org/site/factsheet/orsoya-fish-ponds-iba-bulgaria on 23/11/2024.