ANDERSON, Errol. Commensal Feeding of Gull and Peregrine. Blue Jay, [S. l.], v. 25, n. 2, 1967. DOI: 10.29173/bluejay3119. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3119. Acesso em: 3 may. 2024.