PEPPER, S. R.; KENNEDY, H. J. Moult and measurements of Redpolls Carduelis flammea in North Sweden, 1968. Ornis Fennica, [S. l.], v. 47, n. 1, p. 35–36, 1970. Disponível em: https://ornisfennica.journal.fi/article/view/132786. Acesso em: 18 may. 2024.