HARRIS, Wayne C. 49th Annual Saskatchewan Christmas Bird Count – 1990. Blue Jay, [S. l.], v. 49, n. 1, 1991. DOI: 10.29173/bluejay5303. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5303. Acesso em: 22 jul. 2024.