HOGSTAD, O. Flock composition, agonistic behaviour and body condition of wintering Bullfinches Pyrrhula pyrrhula . Ornis Fennica, [S. l.], v. 83, n. 3, p. 131–138, 2006. Disponível em: https://ornisfennica.journal.fi/article/view/133664. Acesso em: 22 nov. 2024.