Tập tin:Cygnus olor.jpgA mute swan (Cygnus olor) swimming on the River Cam in Cambridge, England. Original upload to En Wiki - 18:36, 23 October 2004 . . Solipsist (Talk | contribs
Tập tin:CygnusOlorJuvenile.jpgtruetrue You may select the license of your choice. English Mute swan (Cygnus olor), juvenile, near Vanhankaupunginlahti, Finland URL: https://commons.wikimedia