Johansen, H. M., V. Selås, K. Fagerland, J. T. Johnsen, B.-A. Sveen, L. Tapia, and R. Steen. 2007. “Goshawk Diet During the Nestling Period in Farmland and Forest-Dominated Areas in Southern Norway”. Ornis Fennica 84 (4):181–188. https://ornisfennica.journal.fi/article/view/133696.