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

The site was identified as internationally important for bird conservation 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 List	Season (year/s of estimate)	Size	IBA criteria
Little Crake Zapornia parva	LC	breeding (2007–2009)	70–90 males	C6
Black Tern Chlidonias niger	LC	breeding (2007–2009)	40–45 pairs	C6

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	Actual vs Reference (units)	% remaining	Result
Spotted Crake Porzana porzana	100 / 70 (males)	100	good
Black Tern Chlidonias niger	70 / 45 (pairs)	100	good

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation (management category)	% coverage of IBA
1956	Jezioro Siedmiu Wysp	Rezerwat Przyrody (IV)	43

Habitat	% of IBA	Habitat detail
Wetlands (inland)	40	Standing freshwater; Rivers and streams; Raised bogs; Water fringe vegetation; Fens, transition mires and springs
Artificial/Terrestrial	30	Arable land; Ruderal land
Forest	15	Broadleaved deciduous woodland; Native coniferous woodland; Mixed woodland
Grassland	15	Humid grasslands; Mesophile grasslands

Land use	% of IBA
agriculture	40
nature conservation and research	40
forestry	12
not utilised	10
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Oswin site (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/oswin-site-iba-poland on 25/12/2024.