• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

Year of most recent IBA criteria assessment: 2000

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Black Grouse Lyrurus tetrix	LC	resident	1988	80-150 breeding pairs	B2
Common Pochard Aythya ferina	VU	breeding	1988	400-600 breeding pairs	B3
Eurasian Bittern Botaurus stellaris	LC	breeding	1988	40-60 breeding pairs	B2

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

Protection status:

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Osveyskiy	Nature Sanctuary or Partial Reserve	22,600	protected area overlaps with site	22,600
Osveiski	Ramsar Site, Wetland of International Importance	22,600	protected area overlaps with site	30,429
Chyrvony Bor	Nature Sanctuary or Partial Reserve (Local)	20	protected area overlaps with site	0

IUCN Habitat	Habitat detail	Extent (% of site)
Forest	Mixed woodland	-
Wetlands (inland)	Standing freshwater, Raised bogs, Water fringe vegetation	-
Grassland		-
Shrubland		-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
forestry	-
hunting	-
nature conservation and research	-

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

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Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Asvieja. Downloaded from http://www.birdlife.org on 30/11/2020.