ESCOTT, Christopher J. Humming Birds – Sapsuckers. Blue Jay, [S. l.], v. 44, n. 2, 1986. DOI: 10.29173/bluejay4838. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4838. Acesso em: 4 may. 2024.