COLLINS, Charles. The Comparative Biology of Two Species of Swifts in Trinidad, West Indies. Bulletin of the Florida Museum of Natural History, [S. l.], v. 11, n. 5, p. 257–320, 1968. DOI: 10.58782/flmnh.htio6291. Disponível em: https://flmnhbulletin.com/index.php/flmnh/article/view/flmnh-vol11-no5. Acesso em: 4 jun. 2026.