selective blur on a panoramic view of the danube river, where swans and small boats glide gently near the waterfront. this subdued

swan swans group flock birds zemun serbia danube rainy grey zemunski key quay dunav kej belgrade srbija serbian dusk winter herd animal wild wildlife bird nature cygnus anatidae cold river foggy autumn water misty landscape afternoon riverbank panorama waterfront boats calm beograd horizon outdoors europe tourism