KADIS, R. M. Clowning crows: Pied Crows at play?. Biodiversity Observations, [S. l.], p. 228–229, 2012. DOI: 10.15641/bo.168. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/168. Acesso em: 15 nov. 2025.