OJANEN, M.; ORELL, M.; VÄISÄNEN, R. A. Egg and clutch sizes in four passerine species in northern Finland. Ornis Fennica, [S. l.], v. 55, n. 2, p. 60–68, 1978. Disponível em: https://ornisfennica.journal.fi/article/view/132969. Acesso em: 21 may. 2024.