anas platyrhynchos animal bird drop droplet duck mallard nature river splash swim water wet wild wild duck wing birds clouds ducks fly flying sky anas-superciliosa aquatic-bird Australian black-eye-stripe brown-duck common dark-brown fauna fowl grey-duck light omnivore omnivorous Pacific-black-duck paddling pond reflecting reflections ripples rippling sunlight sunshine surface surfaces swimming waterbird waterfowl widespread wild-duck wild-life shade shadows anas superciliosa aquatic bird black eye-stripe brown duck grey duck Pacific black duck circles dark movements moving native fauna silhouettes three water birds water fowl wild ducks wild life