whooper swan or cygnus cygnus swimming on lake kussharo in winter at akan national park,hokkaido,japan, mountains covered by snow

akan animal asia background beautiful bird birding clouds cold covered cygnus eastern fly frazil frozen grow hokkaido hot ice japan kussharo lake landscape mountains national naturally nature nautical outdoors parkhokkaidojapan scene scenery season sightseeing sky snow snowy spa spring swan swans swimming tourism transport transportation travel tree trip vacation vessel water white whooper wild winter