HUGHES, Barry. The ecology and behaviour of the North American Ruddy Duck Oxyura jamaicensis in Great Britain and its interaction with native waterbirds: a progress report. Wildfowl, [S. l.], p. 133–138, 1990. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154030. Acesso em: 17 dec. 2025.