mallard near the river, duck with dark green head

animal animals aquatic avian avifauna background beak bird birdwatching blue blurry coast conservation dark design detail duck ducks feather feathering female flight floating fly flying fowl green grey gull gulls head headn hunt hunting isolated lake left looking male mallard natural nature ocean ornithology park plumage profile right river sea single summer tail watch watching waterfowl white wild wildlife wings