Jakubas, Dariusz, and Brygida Manikowska-Slepowronska. “Response of Grey Herons (Ardea Cinerea) to Human Disturbance in a Suburban Village in Poland”. Ornis Fennica, vol. 90, no. 2, July 2013, pp. 86–93, https://doi.org/10.51812/of.133825.