HOUSTON, Stuart and Houston. Fifteenth Annual Saskatchewan Christmas Bird Count, 1956. Blue Jay, [S. l.], v. 15, n. 1, 1957. DOI: 10.29173/bluejay2105. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2105. Acesso em: 3 may. 2024.