PARSONS, W. B. Persistent Barn Swallows at Sylvan Lake. Blue Jay, [S. l.], v. 42, n. 2, 1984. DOI: 10.29173/bluejay6198. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6198. Acesso em: 19 may. 2024.