Smedshaug, C. A., Lund, S. E., Brekke, A., Sonerud, G. A., & Rafoss, T. (2002). The importance of the farmland-forest edge for area use of breeding Hooded Crows as revealed by radio telemetry. Ornis Fennica, 79(1), 1–13. Hämtad från https://ornisfennica.journal.fi/article/view/133565