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close| Location | Bulgaria, Burgas |
| Central coordinates | 26o 47.50' East 42o 37.38' North |
| IBA criteria | A1, B1i, C1, C3, C6 |
| Area | 2,872 ha |
| Altitude | 143 - 226m |
| Year of IBA assessment | 2005 |
Ornithological information Important for waterbirds in winter, especially Anser albifrons, the globally threatened Branta ruficollis, and Phalacrocorax carbo.
Site description A reservoir which replaced the former Straldza marsh, surrounded by meadows and arable land. It does not freeze in winter. Typha is predominant along the banks. Wet meadows are dominated by Carex, Poa and Lolium. There are lines of Populus and Robinia trees. Land-uses include hunting, fish-farming and haymaking.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Greater White-fronted Goose Anser albifrons | winter | 1997 | 6,178-8,500 individuals | good | B1i, C3 | Least Concern |
| Red-breasted Goose Branta ruficollis | winter | 1997 | 46-210 individuals | good | A1, C1 | Endangered |
| Mallard Anas platyrhynchos | winter | 1997 | 22,755 individuals | medium | B1i, C3 | Least Concern |
| Great Bittern Botaurus stellaris | resident | 1999 | 5 breeding pairs | good | C6 | Least Concern |
| Montagu's Harrier Circus pygargus | resident | 1998 | 5-6 breeding pairs | good | C6 | Least Concern |
| Corncrake Crex crex | breeding | 2005 | 21 breeding pairs | good | A1, C1 | Least Concern |
| Eurasian Thick-knee Burhinus oedicnemus | breeding | 1998 | 7 breeding pairs | good | C6 | Least Concern |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Reka Mochuritza - BG0000196 | Habitats Directive | 6,911 | protected area is adjacent to site | 0 | |
| Straldzha - BG0000205 | Habitats Directive | 882 | protected area overlaps with site | 684 | |
| Straldzha Complex - BG0002028 | Birds Directive | 2,872 | is identical to site | 2,872 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Grassland | Humid grasslands | 10% |
| Wetlands (inland) | Standing freshwater; Water fringe vegetation | 90% |
| Artificial landscapes (terrestrial) | Perennial crops, orchards and groves | - |
Land use
| Land-use | Extent (% of site) |
|---|---|
| fisheries/aquaculture | 90% |
| agriculture | 8% |
| hunting | - |
Management considerations Illegal and uncontrolled hunting of waterbirds poses a serious threat.
Protection status National None International None
Related state of the world's birds case studies
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Straldzha Complex. Downloaded from http://www.birdlife.org on 19/06/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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