MORA, José Manuel; CAMPOS LORÍA, Marcos Narón. Progressive greying in the groove-billed ani (Crotophaga sulcirostris) in Costa Rica. Huitzil Revista Mexicana de Ornitologí­a, [S. l.], v. 21, n. 1, 2020. DOI: 10.28947/hrmo.2020.21.1.484. Disponível em: https://mexorn.org/index.php/huitzil/article/view/484. Acesso em: 8 nov. 2026.