LIFJELD, J. T.; SLAGSVOLD, T. Allocation of parental investment by polygynous Pied Flycatcher males. Ornis Fennica, [S. l.], v. 66, n. 1, p. 3–14, 1989. Disponível em: https://ornisfennica.journal.fi/article/view/133271. Acesso em: 22 nov. 2024.