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Location Poland, warminsko-mazurskie
Central coordinates 21o 48.00' East  53o 52.00' North
IBA criteria C1, C2
Area 3,853 ha
Altitude 100 - 150m
Year of IBA assessment 2010

Ogólnopolskie Towarzystwo Ochrony Ptaków

Site description The site is the remnant of the drained W¹¿ lake, now a fen covered by a system of drainage channels and surrounded by marshy forest of birch Betula and alder Alnus, willow Salix scrub and non-intensively used meadows. The site is drained by the Wê¿ówka river, which flows into Buwe³no lake. The Nietlickie marshes are the largest and most intact fens in the whole of the Mazury lakeland, and are covered by sedge-beds, reedbeds Phragmites and Salix scrub. In 1993 hay harvesting and hunting were stopped there. Because of the large roost of Grus grus this area is intensively visited by birdwatchers. Minor land-uses include chalk mining.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Corncrake Crex crex breeding  2008  65 males only  good  C1  Least Concern 
Common Crane Grus grus passage  2008  10,000 individuals  good  C2  Least Concern 

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Bagna Nietlickie Ecological Area 546 protected area contained by site 546  


IUCN habitat Habitat detail Extent (% of site)
Forest Alluvial and very wet forest  18%
Grassland Humid grasslands  26%
Wetlands (inland) Fens, transition mires and springs; Rivers and streams; Water fringe vegetation  22%
Artificial - terrestrial Arable land  33%
Other   1%

Land use

Land-use Extent (% of site)
agriculture 15%
forestry 5%
not utilised 75%

Protection status National Partial International None546 ha of IBA covered by Ecological Area (Bagna Nietlickie, 546 ha).

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Nietlice marshes. Downloaded from on 24/10/2016

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