Smedshaug, C.A., Lund, S.E., Brekke, A., Sonerud, G.A. and 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 (Mar. 2002), 1–13.