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Mute.swans.flying.arp.pix. Two mute swans in flight at Slimbridge Wildfowl and Wetlands Centre Gloucestershire England Taken by Adrian Pingstone in January and released to the public domain org Mute swans flying arp pix Adrian Pingstone en English Arpingstone Cygnus olor in flight pairs Landscape photos with Cygnus olor pairs