SASKATOON N.H.S. Seventh Annual May Day Bird Count Saskatoon N.H.S., May 18, 1963. Blue Jay, [S. l.], v. 21, n. 3, 1963. DOI: 10.29173/bluejay2879. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2879. Acesso em: 5 may. 2024.