HOLROYD, Geoff. White-Tailed Ptarmigan. Blue Jay, [S. l.], v. 40, n. 4, 1982. DOI: 10.29173/bluejay6133. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/6133. Acesso em: 4 may. 2024.