SJÖBERG, Nils. Arrival dates 1948—2006 and breeding 1978—2006 in Jämtland for Pied Flycatcher Ficedula hypoleuca, Redstart Phoenicurus phoenicurus and Willow Warbler Phylloscopus trochilus. Ornis Svecica, Lund, Sweden, v. 16, n. 3, p. 118–126, 2006. DOI: 10.34080/os.v16.22719. Disponível em: https://journals.lub.lu.se/os/article/view/22719. Acesso em: 24 apr. 2024.