the mute swan cygnus olor - an adult swan bird with a red beak cleans its white feathers near the sea

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