Брезгунова, О. О. “The Fieldfare (Turdus Pilaris L.) Communal Roosts in the Kharkiv Region (Ukraine)”. The Journal of V.N.Karazin Kharkiv National University. Series «Biology» 250 (1): 156-162. Accessed November 23, 2024. https://periodicals.karazin.ua/biology/article/view/5573.