SASKATCHEWAN NATURAL HISTORY SOCIETY. 15th Annual Sask. Christmas Bird Count, 1956. Blue Jay, [S. l.], v. 14, n. 4, 1956. DOI: 10.29173/bluejay1798. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/1798. Acesso em: 19 dec. 2025.