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The site was identified as internationally important for bird conservation in 2008 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

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

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Bean Goose Anser fabalis	LC	passage (2001–2003)	15,000–25,000 individuals	A4i, B1i
Greater White-fronted Goose Anser albifrons	LC	passage (2001–2003)	15,000–25,000 individuals	A4i, B1i
Common Crane Grus grus	LC	passage (2001–2003)	500–1,000 individuals	B1i
Whimbrel Numenius phaeopus	LC	breeding (2001–2003)	270–290 breeding pairs	B3
Black-tailed Godwit Limosa limosa	NT	breeding (2001–2003)	150–180 breeding pairs	A1, B2
Mew Gull Larus canus	LC	breeding (2001–2003)	850–1,100 breeding pairs	B2

Year	Protected Area	Designation (management category)	% coverage of IBA
-	Kaiskoe boloto	Nature Monument (III)	13
-	Bylinskoe boloto	Nature Monument (III)	1
-	Valun Granitovyi	Nature Monument (III)	-
-	Malogorskiy bor	Nature Monument (III)	-
-	Rogovskoe boloto	Nature Monument (III)	-
1994	Bylina	Zakaznik (IV)	45

Habitat	% of IBA	Habitat detail
Forest	70	Alluvial and very wet forest; Native coniferous woodland; Treeline ecotone
Wetlands (inland)	18	Fens, transition mires and springs; Raised bogs; Rivers and streams; Standing freshwater
Artificial/Terrestrial	10	Arable land; Highly improved re-seeded landscapes; Other urban and industrial areas
Unknown	2

Land use	% of IBA
hunting	100
nature conservation and research	71
forestry	major (>10)

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Bylinskaya (Russia (European)). Downloaded from https://datazone.birdlife.org/site/factsheet/bylinskaya-iba-russia-(european) on 14/01/2025.