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Location Poland, mazowieckie
Central coordinates 22o 4.00' East  52o 18.00' North
IBA criteria C1, C2, C4, C6
Area 27,880 ha
Altitude 180 m
Year of IBA assessment 2010

Ogólnopolskie Towarzystwo Ochrony Ptaków

Site description A 140 km long stretch of the Liwiec river valley. Some stretches have a natural character, along others the river is regulated. In some places the riverbanks are flat, covered by meadows and wet pastures, in other places they are high. There are fens and transitional mires, used as meadows and pastures, as well as riverine forests. On the riverbanks and some higher areas there are also pine Pinus woods. There are two small pond complexes (48 ha, 70 ha).

Key Biodiversity A total of 120 species had been recorded breeding by 1980. Breeding species of global conservation concern that do not meet IBA criteria: Gallinago media (one pair).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Corncrake Crex crex breeding  1995-1999  150-200 males only  C1  Least Concern 
Eurasian Golden Plover Pluvialis apricaria passage  2007  8,000 individuals  good  C2  Least Concern 
Black Tern Chlidonias niger breeding  2002-2003  60-75 breeding pairs  C6  Least Concern 
A4iii Species group - waterbirds passage  2004-2010  20,000 individuals  poor  C4   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Nadbuzanski Park Krajobrazowy Landscape Park 57,768 protected area overlaps with site 1,500  
Siedlecko-Wêgrowski Protected Landscape Area 35,840 protected area overlaps with site 3,600  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Mixed woodland  14%
Other   2%
Grassland Humid grasslands  50%
Wetlands (inland) Fens, transition mires and springs; Rivers and streams; Standing freshwater; Water fringe vegetation  1%
Artificial - terrestrial   33%

Land use

Land-use Extent (% of site)
agriculture 60%
fisheries/aquaculture 5%
forestry 35%
hunting -

Protection status National Partial International None1,500 ha of IBA covered by Landscape Park (Nadbu¿añski, 53,680 ha). 3,600 ha of IBA covered by Protected Landscape Area (Siedlecko-Wêgrowski, 35,840 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Liwiec river valley. Downloaded from on 27/10/2016

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