KOONZ, W. H. Large Clutches of Ring-Billed Gulls in Manitoba. Blue Jay, [S. l.], v. 38, n. 1, 1980. DOI: 10.29173/bluejay4576. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/4576. Acesso em: 22 jul. 2024.