a swan gracefully floats on the danube river in belgrade, serbia. the serene scene captures the natural beauty of the river and

danube swan labud water head belgrade bird selective blur nature closeup beak white natural peaceful beautiful wild river together two adult anatidae animal background beauty birds close curved cute cygnus detailed elegance elegant eye contact fauna feather look neck necklace plumage serbia swimming waterfront european ornithology majestic waterfowl floating