a female mallard (anas platyrhynchos) duck floats beside graceful swans on the danube in belgrade, serbia.

adult anas anatidae animal avian belgrade beograd bird birds calm close closeup curved cute cygnus danube detailed duck elegant environment evening fauna feather female focus light mallard nature neck necklace peaceful platyrhynchos plumage pretty river serbia serbian serene srbija sunny swan swans swimming symbol together urban water waters white wildlife