SASKATCHEWAN NATURAL HISTORY SOCIETY. General (includes Christmas Bird Census, Feeding Birds, and Books). Blue Jay, [S. l.], v. 4, n. 1, 1945. DOI: 10.29173/bluejay823. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/823. Acesso em: 21 dec. 2024.