GREEN, D.S. Bill Deformity in Clark’s Nutcracker. Blue Jay, [S. l.], v. 27, n. 1, 1969. DOI: 10.29173/bluejay3615. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3615. Acesso em: 18 may. 2024.