FISHER, Robert M. Possible Intra-Specific Killing by a Great Grey Owl. Blue Jay, [S. l.], v. 33, n. 1, 1970. DOI: 10.29173/bluejay4094. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4094. Acesso em: 7 may. 2024.