SEIB, Gary W. Aggressive Mute Swan Kills Gosling. Blue Jay, [S. l.], v. 32, n. 4, 1970. DOI: 10.29173/bluejay3837. Disponível em: https://bluejayjournal.ca/index.php/bluejay/article/view/3837. Acesso em: 4 may. 2024.