ENGELBRECHT, D. Object play of an immature Martial Eagle <i>Polemaetus bellicosus</i>. Biodiversity Observations, [S. l.], p. 52–54, 2010. DOI: 10.15641/bo.112. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/112. Acesso em: 24 nov. 2025.