Ner River Valley

Country/territory: Poland

IBA Criteria met: C1, C3, C4 (2010)
For more information about IBA criteria please click here

Area: 6,861 ha

Ogólnopolskie Towarzystwo Ochrony Ptaków
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2011 not assessed near favourable not assessed
For more information about IBA monitoring please click here

Site description
The Ner valley is a marshy stretch of the Warszawa-Berlin valley between the towns of £êczyca and D¹bie, and adjoins the Bzura river valley. Wet meadows dominate the area, but on low-lying land and adjacent to water there are reedbeds Phragmites in some places, as well as riverine forest and scrub, on the more elevated, drier ground, dry broadleaved forest. The easternmost part of the valley (around £êczyca and B³onia towns) was drained in 1980, and is now less attractive to waterbirds. Other parts of the valley flood annually. The most interesting area ornithologically is around D¹bie town.

Key biodiversity
The most attractive area in central Poland for staging geese and ducks during spring migration. Breeding species of global conservation concern that do not meet IBA criteria: Acrocephalus paludicola (2-3 pairs).

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Ner River Valley. Downloaded from on 06/02/2023.