PYLYPEC, Bohdan. A Determined Barn Swallow. Blue Jay, [S. l.], v. 23, n. 4, 1965. DOI: 10.29173/bluejay2940. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2940. Acesso em: 24 apr. 2024.