Lindström, Åke, and Gösta Lindström. “Barred Warbler Sylvia Nisoria Violently Attacked by Red-Backed Shrike Lanius Collurio”. Ornis Svecica 9, no. 3 (July 1, 1999): 161–162. Accessed November 22, 2024. https://journals.lub.lu.se/os/article/view/22908.