Male mandarin duck preen feathers resting on a fallen tree above pond water

aix galericulata mandarin ducks female male preen feathers preen feathers group log tree water rest relax flock seoul grand park south korea spring plumage wild wildlife birds fauna nature daytime behavior charm pond vibrant animals avian ashore waterfowl colourful oriental ornithology duck pond pair feather bird beak ecosystem exotic biodiversity habitat lake perching fallen mallard duck