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Cygnus olor

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Cygnus_olor__Cygne_tubercule_Cygne_muet.JPG Branta canadensis ThumbnailsBranta canadensis ThumbnailsBranta canadensis ThumbnailsBranta canadensis ThumbnailsBranta canadensis ThumbnailsBranta canadensis ThumbnailsBranta canadensis Thumbnails

Cygne tuberculé, Cygne muet
(J. F. Gmelin, 1789)