HANDRIGAN, Sara A.; SCHUMMER, Michael L.; PETRIE, Scott A.; NORRIS, D. Ryan. Range expansion and migration of Trumpeter Swans Cygnus buccinator re-introduced in southwest and central Ontario. Wildfowl, [S. l.], p. 60–74, 2016. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153681. Acesso em: 13 feb. 2026.