FOLKER, Robert V. Clark’s Nutcracker, Unusual Visitor to Saskatchewan. Blue Jay, [S. l.], v. 19, n. 2, 1961. DOI: 10.29173/bluejay2311. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/2311. Acesso em: 10 may. 2024.