beautiful white mute swan in the nature cleaning his feathers standing in the water of danube river with his head under his wing w

animal autumn avian background beak beautiful beauty bidd bird calm clean cleaning close closeup concept cygnus day detail elegance elegant feather feathers forest grace graceful grey grooming head lake landscape life long maintaining male mute natural nature neck one ornithology outdoors peace peaceful photography plumage pond preening pure purity reflection ripple rippled ripples river romance scene scenery scenic simple spring summer sunny swan swim symbol tail touching view warer water wet white wild wildlife wing wings