BELCHER, M. 40th Annual Saskatchewan Christmas Bird Count – 1981. Blue Jay, [S. l.], v. 40, n. 1, 1982. DOI: 10.29173/bluejay4597. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4597. Acesso em: 2 apr. 2025.