MERILÄ, Juha. Two mixed clutches of Blue Tits Parus caeruleus and Collared Flycatchers Ficedula albicollis. Ornis Svecica, Lund, Sweden, v. 4, n. 4, p. 188–189, 1994. DOI: 10.34080/os.v4.23022. Disponível em: https://journals.lub.lu.se/os/article/view/23022. Acesso em: 4 may. 2024.