|Most recent IBA monitoring assessment|
|Year of assessment||Threat score (pressure)||Condition score (state)||Action score (response)|
|2011||not assessed||unfavourable||not assessed|
|For more information about IBA monitoring please click here|
The site lies in the Drwêca river valley between Brodnica town and the road between Jajkowo and G³êboczek villages, and includes the lower parts of the Brynica and Samionka river valleys, Sopieñ lake and Ostrów lake. The valley is 600 m to 3 km in width and includes a canal system and oxbow lakes. The Drwêca river has a natural character and meanders strongly; overflow in early spring causes extensive flooding. The vegetation is species-rich; besides meadows there are reedbeds Phragmites, sedge-beds and small stands of alder Alnus woodland.
Over 200 species have been recorded, 140 of them breeding. Species of global conservation concern that do not meet IBA criteria: Aythya nyroca (up to two birds on passage), Haliaeetus albicilla (up to five non-breeding birds), Crex crex (4-9 breeding pairs).
BirdLife International (2021) Important Bird Areas factsheet: Marshy valley of the Drweca river. Downloaded from http://www.birdlife.org on 30/11/2021.