• 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
Great Snipe Gallinago media	NT	breeding (2007–2008)	10–22 males	C1, C6
Montagu's Harrier Circus pygargus	LC	breeding (2007–2008)	31–34 pairs	C6
Aquatic Warbler Acrocephalus paludicola	VU	breeding (2007–2008)	159–195 males	C1, C6

Year	Protected Area	Designation (management category)	% coverage of IBA
1973	Brzeźno	Rezerwat Przyrody (IV)	4
1977	Ryś	Rezerwat Przyrody (IV)	9
1983	Chełmski Park Krajobrazowy	Park Krajobrazowy (V)	27
1991	Roskosz	Rezerwat Przyrody (IV)	11
1991	Bagno Serebryskie	Rezerwat Przyrody (IV)	6

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	40	Ruderal land
Grassland	32	Humid grasslands
Wetlands (inland)	23	Rivers and streams; Water fringe vegetation; Fens, transition mires and springs
Forest	5

Land use	% of IBA
nature conservation and research	50
agriculture	40
water management	10
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Chelm calcareous marshes (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/chelm-calcareous-marshes-iba-poland on 26/12/2024.