Male Mallard Duck Swims On The Water Near Grass At Yangjaecheon In Seoul, South Korea

mallard waterfowl dabbling duck duck glossy green head fowl male foraging bird anas platyrhynchos wildlife pond national geographic reflection nature swims animal floating swimming naturenatural anatinae drakes environment lake hunting water pristine river stream habitat natural transparent food park outdoor tracking color surface behavior south korea nobody yangjae landscape grass seoul no people yangjaecheon blue grey