email a friend
printable version
Location Poland, mazowieckie,warminsko-mazurskie
Central coordinates 20o 5.00' East  53o 5.00' North
IBA criteria C1, C6
Area 29,500 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  1998-2003  11-15 breeding pairs  C6  Least Concern 
Corncrake Crex crex breeding  1995-2003  60-150 males only  C1  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Doliny Wkry i Mtawki - PLB140008 Birds Directive 28,752 protected area overlaps with site 27,211  
Olszyny Rumockie - PLH140010 Habitats Directive 150 protected area contained by site 150  


IUCN habitat Habitat detail Extent (% of site)
Forest   5%
Grassland   75%
Artificial - terrestrial   15%
Wetlands (inland)   3%
Other   2%

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2015) Important Bird Areas factsheet: Wkra and Mlawka Rivers Valleys. Downloaded from on 27/04/2015

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