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Location Poland, podlaskie
Central coordinates 23o 20.00' East  53o 15.00' North
IBA criteria C1, C6
Area 117,500 ha
Altitude 30 - 160m
Year of IBA assessment 2010

Ogólnopolskie Towarzystwo Ochrony Ptaków



Site description A fragmented forest, historically divided into the B³udowska, Knyszyñ, Malawicka, Odelska and Supraœl forests, with numerous seepages, springs (c.450), clean streams and small rivers. The terrain is varied. River valleys, mainly drained, are occupied by fens and transitional mires covered by reedbeds Phragmites and sedge-beds Carex. In stagnant hollows there are transitional mires and, more rarely, raised bogs. Although many stands still have a natural character, most are rather young (40-70 years old). About 80% of the forest is coniferous, dominated by pine Pinus and spruce Picea. Broadleaved forest is dominated by lime Tilia and hornbeam Carpinus, with ash Fraxinus and alder Alnus in riverine habitats and birch Betula in marshy areas. Open areas are occupied by fields, meadows, pastures and human settlements.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Hazel Grouse Bonasa bonasia breeding  1989-1993  3,500-4,500 breeding pairs  C6  Least Concern 
Black Grouse Lyrurus tetrix breeding  1989-2002  20-50 males only  C6  Least Concern 
Whooper Swan Cygnus cygnus breeding  1989-1995  2 breeding pairs  unknown  C6  Least Concern 
Black Stork Ciconia nigra breeding  1989-1993  15-16 breeding pairs  C6  Least Concern 
European Honey-buzzard Pernis apivorus breeding  1989-1999  60-75 breeding pairs  C6  Least Concern 
Lesser Spotted Eagle Clanga pomarina breeding  1989-2003  58-59 breeding pairs  C6  Least Concern 
Corncrake Crex crex breeding  2004-2009  250-350 males only  good  C1, C6  Least Concern 
Eurasian Pygmy-owl Glaucidium passerinum breeding  2004-2009  20-40 breeding pairs  poor  C6  Least Concern 
Boreal Owl Aegolius funereus breeding  2009  120 breeding pairs  medium  C6  Least Concern 
Black Woodpecker Dryocopus martius breeding  1989-1993  400-600 breeding pairs  C6  Least Concern 
Picoides tridactylus breeding  2005-2008  35-50 breeding pairs  good  C6  Not Recognised 
Ficedula parva breeding  1989-1993  500-1,500 breeding pairs  unknown  C6  Not Recognised 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Bahno w Borkach Nature Reserve 287 protected area contained by site 286  
Budzisk Nature Reserve 330 protected area contained by site 14  
Gola Nature Reserve 12 protected area contained by site 220  
Jaówka Nature Reserve 227 protected area contained by site 227  
Jesionowe Góry Nature Reserve 377 protected area contained by site 377  
Karczmisko Nature Reserve 20 protected area contained by site 17  
Krasne Nature Reserve 85 protected area contained by site 85  
Krzemianka Nature Reserve 231 protected area contained by site 231  
Krzemienne Góry Nature Reserve 79 protected area contained by site 74  
Kulikówka Nature Reserve 11 protected area contained by site 11  
Las Cieliczanski Nature Reserve 371 protected area contained by site 371  
Miedzyrzecze Nature Reserve 250 protected area contained by site 250  
Ostoja Knyszynska - PLH200006 Habitats Directive 136,084 protected area contains site 117,500  
Puszcza Knyszynska - PLB200003 Birds Directive 139,590 protected area overlaps with site 107,584  
Puszczy Knyszyñskiej im. Prof. Witolda Sóawiñskieg Landscape Park 73,094 protected area contained by site 73,094  
Stara Dêbina Nature Reserve 34 protected area contained by site 34  
Stare Biele Nature Reserve 256 protected area contained by site 256  
Starodrzew Szyndzielski Nature Reserve 80 protected area contained by site 80  
Surazkowo Nature Reserve 137 protected area contained by site 134  
Wielki Las Nature Reserve 32 protected area contained by site 129  
Woronicza Nature Reserve 139 protected area contained by site 134  

Habitats

IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest; Mixed woodland; Native coniferous woodland  72%
Grassland Humid grasslands; Mesophile grasslands  12%
Other   1%
Artificial - terrestrial Arable land; Ruderal land  15%

Land use

Land-use Extent (% of site)
agriculture -
forestry -
hunting -

Protection status National Partial International None2,930 ha of IBA covered by 18 Nature Reserves (Bahno w Borkach; Budzisk; Ja³ówka; Jesionowe Góry; Karczmisko; Krasne; Krzemianka; Krzemienne Góry; Kulikówka; Las Cieliczañski; Miêdzyrzecze; Pieszczana Góra; Stara Dêbina; Stare Biele; Starodrzew Szyndzielski; Sura¿kowo; Wielki Las; Woronicza; combined area 2,930 ha). 73,094 ha of IBA covered by Landscape Park (Puszczy Knyszyñskiej im. Prof. Witolda S³awiñskieg, 73,094 ha).

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Knyszyn Forest. Downloaded from http://www.birdlife.org on 23/10/2014

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