the mute swan cygnus olor - a large white waterfowl swan walks along a sandy beach of the black sea, ukraine

cygnus olor swan swans bird birds aves anseriformes anatidae waterfowl aquatic wildlife fauna ornithology closeup nature sea water coastal white plumage beak redbeak wetland migration wings feathers elegance beauty cygnini birdwatching habitat ecosystem wildbird avian marine animals avifauna cygnet feather float mute seabird wild wing red