HARRIS, Wayne C. 56th annual Saskatchewan Christmas bird count - 1997. Blue Jay, [S. l.], v. 56, n. 1, 1998. DOI: 10.29173/bluejay5908. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/5908. Acesso em: 3 may. 2024.