SASKATCHEWAN NATURAL HISTORY SOCIETY; [COMPILED BY] MARY HOUSTON. Sixteenth Annual Saskatchewan Christmas Bird Count, 1957. Blue Jay, [S. l.], v. 16, n. 1, 1958. DOI: 10.29173/bluejay2705. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2705. Acesso em: 13 dec. 2025.