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Year of most recent IBA criteria assessment: 2010

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Hazel Grouse Tetrastes bonasia	LC	breeding	1999-2001	1,600-1,800 breeding pairs	C6
European Nightjar Caprimulgus europaeus	LC	breeding	1985-1994	250-280 breeding pairs	C6
Corncrake Crex crex	LC	breeding	1999-2001	80-120 males	C1
Spotted Crake Porzana porzana	LC	breeding	1999-2001	10-40 males	C6
Eurasian Pygmy-owl Glaucidium passerinum	LC	breeding	1999-2001	80-100 breeding pairs	C6
Boreal Owl Aegolius funereus	LC	breeding	1999-2001	30-50 breeding pairs	C6
European Honey-buzzard Pernis apivorus	LC	breeding	2003-2004	90-120 breeding pairs	C6
Lesser Spotted Eagle Clanga pomarina	LC	breeding	2003-2004	30-35 breeding pairs	C6
Three-toed Woodpecker Picoides tridactylus	LC	breeding	1999-2001	60-80 breeding pairs	C6
Middle Spotted Woodpecker Leiopicus medius	LC	breeding	1999-2001	1,100-1,300 breeding pairs	C6
White-backed Woodpecker Dendrocopos leucotos	LC	breeding	1999-2005	60-90 breeding pairs	C6
Barred Warbler Curruca nisoria	LC	breeding	1985-1994	200-220 breeding pairs	C6
Collared Flycatcher Ficedula albicollis	LC	breeding	1999-2001	5,000-10,000 breeding pairs	C6
Red-breasted Flycatcher Ficedula parva	LC	breeding	1999-2001	300-600 breeding pairs	C6

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Threats to the site (pressure)
Threat Level 1	Threat Level 2	Timing	Scope	Severity	Result
Biological resource use	logging & wood harvesting - intentional use: large scale	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high

Condition of habitat (state)
Habitat	Habitat Detail	Reference Area (ha)	Actual Area (ha)	% of habitat remaining	% of carrying capacity (overall)	Result
Forest	Mixed woodland	0	0	good (> 90%)	good (> 90%)	favourable

Conservation actions taken at site (response)
Conservation Designation	Management Planning	Conservation Action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species	Substantive conservation measures are being implemented but these are not comprehensive and are limited by resources and capacity	high

For more information about IBA monitoring please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Wysokie Bagno	Rezerwat Przyrody	79	protected area contained by site	79
Szczekotowo	Rezerwat Przyrody	37	protected area contained by site	37
Starzyna	Rezerwat Przyrody	370	protected area contained by site	369
Sitki	Rezerwat Przyrody	35	protected area contained by site	35
Siemianówka	Rezerwat Przyrody	225	protected area overlaps with site	225
Rezerwat Krajobrazowy Władysława Szafera	Rezerwat Przyrody	1,346	protected area contained by site	1,357
Puszcza Białowieska	Special Protection Area (Birds Directive)	63,148	protected area overlaps with site	62,500
Puszcza Białowieska	Obszar Chronionego Krajobrazu	76,657	protected area overlaps with site	0
Puszcza Białowieska	Site of Community Importance (Habitats Directive)	63,148	protected area overlaps with site	0
Przewłoka	Rezerwat Przyrody	79	protected area contained by site	0
Przęślin	Rezerwat Przyrody	1	protected area contained by site	78
Pogorzelce	Rezerwat Przyrody	8	protected area contained by site	8
Podolany	Rezerwat Przyrody	15	protected area contained by site	15
Podcerkwa	Rezerwat Przyrody	228	protected area contained by site	115
Ostoja w Dolinie Górnej Narwi	Site of Community Importance (Habitats Directive)	19,090	protected area is adjacent to site	0
Olszanka Myśliszcze	Rezerwat Przyrody	283	protected area contained by site	278
Nieznanowo	Rezerwat Przyrody	28	protected area contained by site	28
Michnówka	Rezerwat Przyrody	85	protected area contained by site	85
Lipiny w Puszczy Białowieskiej	Rezerwat Przyrody	56	protected area contained by site	0
Lipiny	Nature Reserve	56	protected area contained by site	57
Lasy Naturalne Puszczy Białowieskiej	Rezerwat Przyrody	8,604	protected area contained by site	0
Kozłowe Borki	Rezerwat Przyrody	246	protected area contained by site	247
Gnilec	Rezerwat Przyrody	37	protected area contained by site	37
Głęboki Kąt	Rezerwat Przyrody	40	protected area contained by site	40
Dolina Waliczówki	Rezerwat Przyrody	45	protected area overlaps with site	45
Dolina Narwi	Obszar Chronionego Krajobrazu	43,146	protected area is adjacent to site	0
Dolina Górnej Narwi	Special Protection Area (Birds Directive)	18,384	protected area is adjacent to site	0
Dębowy Grąd	Rezerwat Przyrody	100	protected area contained by site	100
Białowieski Park Narodowy	Park Narodowy	10,529	protected area contained by site	10,502
Bialowieza Forest	World Heritage Site	141,885	protected area overlaps with site	10,502
Bialowieza	UNESCO-MAB Biosphere Reserve	10,502	protected area contained by site	10,502
Berezowo	Rezerwat Przyrody	116	protected area contained by site	115

IUCN Habitat	Habitat detail	Extent (% of site)
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Alluvial and very wet forest	-
Grassland	Humid grasslands, Mesophile grasslands	-
Wetlands (inland)	Standing freshwater, Rivers and streams, Raised bogs, Water fringe vegetation	-
Artificial/Terrestrial	Highly improved re-seeded landscapes, Arable land, Urban parks and gardens, Other urban and industrial areas, Ruderal land	-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-
forestry	-
nature conservation and research	-
urban/industrial/transport	-
hunting	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Bialowieza Forest. Downloaded from http://www.birdlife.org on 02/04/2023.