BRODKORB, Pierce. How Many Species of Birds Have Existed?. Bulletin of the Florida Museum of Natural History, [S. l.], v. 5, n. 3, p. 41–56, 1960. DOI: 10.58782/flmnh.xibi6550. Disponível em: https://flmnhbulletin.com/index.php/flmnh/article/view/flmnh-vol5-no3. Acesso em: 6 jun. 2026.