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Location Poland, podlaskie
Central coordinates 23o 12.00' East  52o 35.00' North
IBA criteria C1, C6
Area 3,887 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  2005-2008  9-18 breeding pairs  good  C6  Least Concern 
Corncrake Crex crex breeding  2005-2008  206-229 males only  good  C1  Least Concern 
Black-tailed Godwit Limosa limosa breeding  2005-2006  13-31 breeding pairs  good  C1  Near Threatened 

IBA Monitoring

2008 very high favourable low
Medium - based upon reliable but incomplete / partially representative data

Human intrusions and disturbance work and other activities happening now majority/most of area/population (50-90%) very rapid to severe deterioration very high
Natural system modifications other ecosystem modifications past (and unlikely to return) and no longer limiting some of area/population (10-49%) no or imperceptible deterioration low
Over-exploitation, persecution and control of species direct mortality of trigger species - hunting and trapping happening now some of area/population (10-49%) slow but significant deterioration medium
Pollution agricultural and forestry effluents and practices happening now small area/few individuals (<10%) slow but significant deterioration low

Artificial - terrestrial   700 700 100 moderate (70-90%) near favourable
Grassland   300 300 100 moderate (70-90%) near favourable
Wetlands (inland)   100 100 100 good (> 90%) favourable

Crex crex Corncrake 229 229 males only 100 favourable

Most of site (50-90%) covered (including the most critical parts for important bird species)  No management planning has taken place  Very little or no conservation action taking place  low 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Dolina Górnego Nurca - PLB200004 Birds Directive 3,995 protected area overlaps with site 3,607  
Ostoja w dolinie Górnego Nurca - PLH200021 Habitats Directive 5,524 protected area overlaps with site 2,943  


IUCN habitat Habitat detail Extent (% of site)
Forest   1%
Grassland   80%
Artificial - terrestrial   17%
Other   1%
Wetlands (inland)   1%

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Upper Nurzec River Valley. Downloaded from on 25/11/2014

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