ELTS, Jaanus et al. An update of the European breeding population sizes and trends of the Ortolan Bunting (Emberiza hortulana). Ornis Fennica, [S. l.], v. 93, n. 3, p. 186–196, 2016. DOI: 10.51812/of.133900. Disponível em: https://ornisfennica.journal.fi/article/view/133900. Acesso em: 12 apr. 2026.