EN
In 39 birds, belonging to 10 species of Falconiformes and Strigiformes, 7 species of Nematoda were detected. Two species: Capillaria falconis and Thominx tenuissima appeared to be new for the Polish fauna. Capillaria falconis and Thominx contorta were found for the first time in Accipiter gentilis and Haliaetus albicilla, and Strix aluco, respectively.