BOYD, R.; PEARD, S. "Floating" Grey Heron?. Biodiversity Observations, [S. l.], p. 37–38, 2015. DOI: 10.15641/bo.270. Disponível em: https://journals.uct.ac.za/index.php/BO/article/view/270. Acesso em: 12 nov. 2025.