SASKATCHEWAN NATURAL HISTORY SOCIETY. Fourth Annual May Day Count Saskatoon Natural History Society, May 23, 1960. Blue Jay, [S. l.], v. 18, n. 3, 1960. DOI: 10.29173/bluejay2460. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2460. Acesso em: 14 mar. 2025.