HARRIS, Wayne. 50th Annual Saskatchewan Christmas Bird Count – 1991. Blue Jay, [S. l.], v. 50, n. 1, 1992. DOI: 10.29173/bluejay5315. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5315. Acesso em: 26 apr. 2024.