The reed meadow called Partos-rét in Hajdúböszörmény and Nagy-nyerges, located a few hundred meters away, are also mostly reeds and the associated broad lawn border has been under nature conservation protection since 2004 in an area of nearly 80 hectares. These were once the wetlands of the Hajdúhadház border, and today they are the emergency water reservoirs of the Vidi-ér watercourse, which passes right next to them. Nagy-nyerges rét got its name from the mound of the same name rising above it.

According to maps of military censuses centuries ago, both areas were covered with water for most of the year, conditions that have now radically changed. Thus, in the mentioned vein, the water mostly just trickles, but the former abundance of water is already a thing of the past. Most recently, during the inland water period of 2006 and 2011, there was significant water coverage in the two areas, when Podiceps nigricollis and Chlidonias hybrida nested in small colonies in the water-covered reeds. In addition, the wetland was home to the Circus aeruginosus, Botaurus stellaris, Egretta alba and the Aythya nyroca. We can only hope for the reappearance of these birds in a next year with plenty of rainfall. In the course of our research on the Nagy-syerges meadow, our butterfly species protected by the Bern
Convention, the Lycaena dispar, was discovered. But it is also the breeding place of many protected and endangered amphibians. In addition, the grasslands are breeding grounds for many plants characteristic of loess grasslands. The areas can be approached from Cégényi út, and their locations are indicated by oval signs on their corners (the Partos-rét is not open to visitors, it is a private area surrounded by a fence)