PETERZ, Mats. Timing and seasonal changes in Eider Somateria mollissima spring migration in the northern Öresund, south Sweden, 1975–2001. Ornis Svecica, Lund, Sweden, v. 13, n. 4, p. 115–122, 2003. DOI: 10.34080/os.v13.22803. Disponível em: https://journals.lub.lu.se/os/article/view/22803. Acesso em: 3 may. 2024.