HARRIS, Wayne C. 48th Annual Saskatchewan Christmas Bird Count – 1989. Blue Jay, [S. l.], v. 48, n. 1, 1990. DOI: 10.29173/bluejay4972. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4972. Acesso em: 3 jul. 2024.