WORDEN, Jenny; CROWE, Olivia; EINARSSON, Ólafur; GARDARSSON, Arnthor; MCELWAINE, Graham; REES, Eileen C. Population size and breeding success of the Icelandic Whooper Swan Cygnus cygnus: results of the January 2005 international census. Wildfowl, [S. l.], p. 17–40, 2013. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153945. Acesso em: 16 dec. 2025.