SASKATCHEWAN NATURAL HISTORY SOCIETY. Eighth Annual May Bird Census, Regina. Blue Jay, [S. l.], v. 26, n. 3, 1968. DOI: 10.29173/bluejay3393. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3393. Acesso em: 19 dec. 2025.