Description
Obszar Dawnej Kopalni Siarki Jeziórko is a vast open area with 19 ponds, several hundred hectares of meadows, reed beds and wetlands in post-mining sinkholes. Over 200 species of birds (115 breeding birds) have been observed here. It is an excellent place to observe the breeding gulls such as naurulokki, aroharmaalokki, mustanmerenlokki and waders like punajalkaviklo, pikkutylli and kuovi. Also other water birds and herons can be seen here like pikkuhuitti, luhtahuitti, Luhtakana, nokikana, ruisrääkkä, pikkuhaikara and kaulushaikara.
During spring migration, you can observe flocks of geese (up to several hundred individuals) merihanhi, tundrahanhi, tundrametsähanhi, kiljuhanhi and valkoposkihanhi, ducks (up to several thousand) ruskosotka, jouhisorsa, punapäänarsku, tukkasotka and punasotka, etc.
In late autumn, regular groups of uivelo (the largest in the region), as well as kuikka, kaakkuri and tukkakoskelo can be seen. In winter you can regularly observe, among others sinisuohaukka, piekana and merikotka. Among the owls observed in this area, suopöllö and breeding and sarvipöllö should be mentioned. It's worth having a telescope with you, but with the binoculars only you can easily see most species.
Details
Access
The easiest way to get to the Jeziórka area is from the Grębów - Tarnobrzeg road. The oldest post-mining ponds are already visible from the road, an asphalt road leads deep into the area (further on, shallow and gravel). You can also enter or walk from the side of Wydrza on a gravel road (turn after the Primary School in Wydrza).
A very convenient means of transportation is by bike, but you might as well get there by car or hitchhike and just walk around the whole area.


