Slesin and Wystep ponds

Country/territory: Poland

IBA Criteria met: A4i, B1i (2000)
For more information about IBA criteria please click here

Area: 3,200 ha

Ogólnopolskie Towarzystwo Ochrony Ptaków

Site description
Two fish-pond complexes in the Toruñ-Eberswald stream valley. Œlesin fish-pond complex (170 ha) lies c.20 km west of the town of Bydgoszcz, and comprises 14 small ponds of a few hectares each and one large pond (130 ha). Wystêp fish-pond complex (200 ha) is similar. The ponds are full from April to October, supplied by the Bydgoszcz channel and drainage ditches, and are used for fish-farming (carp Cyprinus). Both complexes are surrounded by wet meadows, used for pasture and hay, and areas of mire and wet forest.

Key biodiversity
The most important place in Poland for Cygnus columbianus during migration, and a moulting site for Cygnus olor. In summer up to 600 Remiz pendulinus and several dozen Panurus biarmicus are present. Species of global conservation concern that do not meet IBA criteria: Haliaeetus albicilla (one pair resident; up to five birds on passage), Crex crex (new breeder).

Recommended citation
BirdLife International (2023) Important Bird Areas factsheet: Slesin and Wystep ponds. Downloaded from on 27/01/2023.