HOUSTON, Dr. Stuart. Red Crossbills at Yorkton. Blue Jay, [S. l.], v. 9, n. 4, 1951. DOI: 10.29173/bluejay1240. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/1240. Acesso em: 7 may. 2024.