Pakkala T, Tiainen J, Pakkala H, Piha M, Kouki J. Nest tree characteristics of Grey-headed Woodpeckers (Picus canus) in boreal forests. Ornis Fenn [Internet]. 2020Sep.30 [cited 2024May13];97(3):89–100. Available from: https://ornisfennica.journal.fi/article/view/133969