TRUJILLO, Luis A.; DÍAZ, Enrique. 148 years later: noteworthy record of the Canvasback Duck, Aythya valisineria (Wilson) (Anseriformes, Anatidae), from Guatemala. Ceiba, [S. l.], n. 0850, p. 1–4, 2021. DOI: 10.5377/ceiba.v0i0850.10758. Disponível em: https://www.camjol.info/index.php/CEIBA/article/view/10758. Acesso em: 6 dec. 2025.