LAHTI, E. Nest sites and nesting habitats of the Ural Owl Strix uralensis in Finland during the period 1870–1969. Ornis Fennica, [S. l.], v. 49, n. 3–4, p. 91–97, 1972. Disponível em: https://ornisfennica.journal.fi/article/view/132842. Acesso em: 23 nov. 2024.