FYFE, R.W. Observations of Nesting Tree Swallows: They Will Never Come. Blue Jay, [S. l.], v. 19, n. 2, 1961. DOI: 10.29173/bluejay2315. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2315. Acesso em: 17 may. 2024.