email a friend
printable version
Location Poland, pomorskie
Central coordinates 17o 32.00' East  53o 50.00' North
IBA criteria B1i, B2, B3
Area 38,815 ha
Altitude 119 - 207m
Year of IBA assessment 2000

Ogólnopolskie Towarzystwo Ochrony Ptaków

Site description The area is part of the great Tuchola `sandr' (outwash plain of glacial origin). The terrain is varied, with elevated plains, extensive hills, many hummocks, valleys and troughs, and is drained by the Brda river and its many tributaries (the largest being the Zbrzyca). Some of the rivers have steep gradients and strong flows. Of 60 lakes in this area, the largest is Charzykowskie lake (1,363 ha), and the deepest is Ostrowite lake (43 m deep). Many are flow-lakes, being part of the Brda river system, and most have low to moderate levels of nutrients. Forests are dominated by pine Pinus. On richer soils there are dry-ground forests of hornbeam Carpinus, birch Betula, beech Fagus and oak Quercus, and near watercourses and reservoirs there is riverside carr and forest of alder Alnus. There are fens, connected with rivers and lakes, as well as (in hollows) raised bogs and transitional mires.

Key Biodiversity An important wintering site for swans Cygnus (all three European species), which also holds 10% of the national population of Pandion haliaetus on passage. A total of 107 species have been recorded breeding; breeding species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (three pairs).

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Whooper Swan Cygnus cygnus winter  1995  50-400 individuals  good  B1i, B3  Least Concern 
Red Kite Milvus milvus breeding  1991  15 breeding pairs  good  B3  Near Threatened 
Eurasian Eagle-owl Bubo bubo resident  1996  7-10 breeding pairs  good  B2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Bagno Stawek Nature Reserve 41 protected area contained by site 41  
Bagno Stawek Nature Reserve 41 unknown 41  
Jezioro Laska NR (Bird Reserve) Nature Reserve 70 unknown 70  
Jezioro Lasko Nature Reserve 70 protected area contained by site 70  
Jezioro Maóe Lowne Nature Reserve 38 unknown 38  
Jezioro Maóe Lowne Nature Reserve 38 protected area contained by site 38  
Male Lowne Nature Reserve 38 unknown 38  
Nawionek Nature Reserve 11 protected area contained by site 11  
PN Bory Tucholskie National Park 4,613 protected area contained by site 4,789  
Zaborski Park Krajobrazowy Landscape Park 34,026 protected area contained by site 31,279  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Broadleaved deciduous woodland; Mixed woodland; Native coniferous woodland  66%
Shrubland Heathland  -
Grassland Humid grasslands; Mesophile grasslands  7%
Wetlands (inland) Fens, transition mires and springs; Raised bogs; Rivers and streams; Standing freshwater; Water fringe vegetation  12%
Artificial - terrestrial Arable land; Highly improved re-seeded landscapes; Ruderal land  15%

Land use

Land-use Extent (% of site)
forestry 57%
agriculture 17%
fisheries/aquaculture 8%
nature conservation and research 12%
urban/industrial/transport 5%
hunting -

Protection status National High International None4,789 ha of IBA covered by National Park (Bory Tucholskie, 4,789 ha). 41 ha of IBA covered by Nature Reserve (Bagno Stawek, 41 ha). 70 ha of IBA covered by Nature Reserve (Jezioro Laska, 70 ha). 38 ha of IBA covered by Nature Reserve (Jezioro Ma³e £owne, 38 ha). 11 ha of IBA covered by Nature Reserve (Jezioro Nawionek, 11 ha). 31,279 ha of IBA covered by Landscape Park (Zaborski, 31,279 ha).

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 (2016) Important Bird and Biodiversity Area factsheet: Middle part of Tuchola forest. Downloaded from on 21/10/2016

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