DE SWARDT, D. H. Secretarybird Sagittaruis serpentaruis resighted after five years. Biodiversity Observations, [S. l.], v. 7, p. 1–2, 2016. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/319. Acesso em: 22 mar. 2023.