SASKATCHEWAN NATURAL HISTORY SOCIETY. North American Co-operative Bird Migration Study - 1956. Blue Jay, [S. l.], v. 14, n. 2, 1956. DOI: 10.29173/bluejay1890. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/1890. Acesso em: 14 jan. 2025.