KERÄNEN, S.; SOIKKELI, M. The feather of fortune in the courtship of the Raven. Ornis Fennica, [S. l.], v. 62, n. 1, p. 23–24, 1985. Disponível em: https://ornisfennica.journal.fi/article/view/133168. Acesso em: 23 nov. 2024.