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Location Poland, podlaskie
Central coordinates 22o 25.00' East  53o 10.00' North
IBA criteria C1, C6
Area 15,700 ha
Year of IBA assessment 2010

Ogólnopolskie Towarzystwo Ochrony Ptaków

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Montagu's Harrier Circus pygargus breeding  2008  13-14 breeding pairs  good  C6  Least Concern 
Corncrake Crex crex breeding  2008  352-365 males only  good  C1, C6  Least Concern 
Great Snipe Gallinago media breeding  2008  14 males only  good  C6  Near Threatened 
Eurasian Curlew Numenius arquata breeding  2008  16-17 breeding pairs  good  C1  Near Threatened 
Aquatic Warbler Acrocephalus paludicola breeding  2008  73-74 males only  good  C1, C6  Vulnerable 
Barred Warbler Sylvia nisoria breeding  2008  263-300 breeding pairs  good  C6  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Biebrza National Park Wetlands of International Importance (Ramsar) 59,233 protected area overlaps with site 200  
Biebrzanski PN National Park 59,223 protected area overlaps with site 200  


IUCN habitat Habitat detail Extent (% of site)
Forest   1%
Grassland   90%
Artificial - terrestrial   1%
Wetlands (inland)   8%

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Wizna Swamps. Downloaded from on 26/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife