bewick`s swan - cygnus columbianus bewickii landing on a gloucestershire wetland.

adult arctic bewickii bewicks bird birding birds birdwatching breed britain columbianus cygnus elegant england europe feather feathers germany gloucestershire landing migration migratory netherlands ornithology siberia slimbridge spray subarctic subspeices sunny swan swans trust tundra visitor water waterbird waterfowl western wetland white wild wildfowl wildlife winter winters wwt yellow