Zbyryt, Adam, Cezary Mitrus, and Grzegorz Neubauer. “Productivity of the Great Egret (Ardea Alba) and Grey Heron (A. Cinerea) in Mixed Heronries in Poland and Behavioral Response of Fledglings to a Drone”. Ornis Fennica 100, no. 4 (January 22, 2024): 00–00. Accessed November 24, 2024. https://ornisfennica.journal.fi/article/view/119429.