Wiktander, U., Nilsson, I. N., Nilsson, S. G., Olsson, O., Pettersson, B. and Stagen, A. (1992) “Occurrence of the Lesser Spotted Woodpecker Dendrocopos minor in relation to area of deciduous forest”, Ornis Fennica, 69(3), pp. 113–118. Available at: https://ornisfennica.journal.fi/article/view/133347 (Accessed: 17May2024).