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The site was identified as important in 2010 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
Hazel Grouse Tetrastes bonasia	LC	breeding	2005-2009	1,500-2,500 breeding pairs	C6
Western Capercaillie Tetrao urogallus	LC	breeding	2008	24-25 males	C6
European Nightjar Caprimulgus europaeus	LC	breeding	2005-2009	80-100 breeding pairs	C6
Corncrake Crex crex	LC	breeding	2005-2009	250-360 males	C1, C6
Common Crane Grus grus	LC	breeding	2005-2009	120-160 breeding pairs	C6
Black Stork Ciconia nigra	LC	breeding	2005-2009	10-20 breeding pairs	C6
Great Snipe Gallinago media	NT	breeding	2008-2009	10-14 males	C6
Black Tern Chlidonias niger	LC	breeding	2005-2009	35-45 breeding pairs	C6
Eurasian Pygmy-owl Glaucidium passerinum	LC	breeding	2005-2009	20-60 breeding pairs	C6
Boreal Owl Aegolius funereus	LC	breeding	2005-2009	40-60 breeding pairs	C6
European Honey-buzzard Pernis apivorus	LC	breeding	2005-2009	60-71 breeding pairs	C6
Lesser Spotted Eagle Clanga pomarina	LC	breeding	2005-2009	32-39 breeding pairs	C6
White-tailed Sea-eagle Haliaeetus albicilla	LC	breeding	2009	10-12 breeding pairs	C6
Red Kite Milvus milvus	LC	breeding	2005-2009	7-10 breeding pairs	C1
Black Kite Milvus migrans	LC	breeding	2005-2009	8-10 breeding pairs	C6
Grey-faced Woodpecker Picus canus	LC	breeding	2005-2009	30-50 breeding pairs	C6
Black Woodpecker Dryocopus martius	LC	breeding	2005-2009	250-350 breeding pairs	C6
Woodlark Lullula arborea	LC	breeding	2005-2009	350-500 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2010) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2011) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Hazel Grouse Tetrastes bonasia	2,500	2,500	breeding pairs	100	favourable
Western Capercaillie Tetrao urogallus	20	40	males	100	favourable
Corncrake Crex crex	360	500	breeding pairs	100	favourable
Eurasian Pygmy-owl Glaucidium passerinum	15	60	breeding pairs	100	favourable
Lesser Spotted Eagle Clanga pomarina	39	40	breeding pairs	100	favourable
White-tailed Sea-eagle Haliaeetus albicilla	12	15	breeding pairs	100	favourable

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
-	Various III	Nature Reserve	<1
1959	Kozi Rynek	Rezerwat Przyrody	<1
1959	Mały Borek	Rezerwat Przyrody	<1
1959	Tobolinka	Rezerwat Przyrody	<1
1960	Starożyn	Rezerwat Przyrody	<1
1960	Jezioro Kolno	Rezerwat Przyrody	<1
1963	Brzozowy Grąd	Rezerwat Przyrody	-
1970	Perkuć	Rezerwat Przyrody	<1
1971	Glinki	Rezerwat Przyrody	<1
1980	Jezioro Kalejty	Rezerwat Przyrody	1
1980	Stara Ruda	Rezerwat Przyrody	<1
1982	Dolina Biebrzy	Obszar Chronionego Krajobrazu	5
1984	Kukle	Rezerwat Przyrody	<1
1984	Łempis	Rezerwat Przyrody	<1
1985	Kuriańskie Bagno	Rezerwat Przyrody	1
1989	Wigierski Park Narodowy	Park Narodowy	11
1991	Puszcza i Jeziora Augustowskie	Obszar Chronionego Krajobrazu	48
1991	Pojezierze Sejneńskie	Obszar Chronionego Krajobrazu	7
1991	Dolina Rospudy	Obszar Chronionego Krajobrazu	6
2001	Ostoja Augustowska	Site of Community Importance (Habitats Directive)	80
2001	Ostoja Wigierska	Site of Community Importance (Habitats Directive)	12
2002	Wigry National Park	Ramsar Site, Wetland of International Importance	11
2007	Puszcza Augustowska	Special Protection Area (Birds Directive)	100
2009	Pojezierze Sejneńskie	Site of Community Importance (Habitats Directive)	2

Habitat1	Habitat detail	% of IBA
Forest	Broadleaved deciduous woodland, Native coniferous woodland, Mixed woodland, Alluvial and very wet forest	85
Artificial/Terrestrial	Highly improved re-seeded landscapes, Arable land, Ruderal land	8
Wetlands (inland)	Standing freshwater, Rivers and streams, Raised bogs, Water fringe vegetation	7

1. IUCN Habitat classification.

Land use	% of IBA
forestry	85
nature conservation and research	23
agriculture	8
fisheries/aquaculture	5
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Augustów forest (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/augustów-forest-iba-poland on 22/11/2024.