anas superciliosa aquatic bird Australian bird black eye-stripe brown duck common dark-brown duck fauna fowl grey duck omnivore omnivorous Pacific black duck waterbird waterfowl widespread wild duck birding Dendrocygna javanica ducks flock Incredible India India Indian Whistling Duck Karkala karnataka Lesser Whistling Duck Lesser Whistling Teal Pakshikere Tree Duck whistle whistling duck Whistling Teals ripples rippling swimming water anas-superciliosa aquatic-bird black-eye-stripe brown-duck grey-duck Pacific-black-duck pond wild-duck beautiful Dendrocygna eytoni eyes Eyton's Plumed feathers grass Grass Whistle Duck Grey or Red-legged Whistler Monkey Duck native nature ornithology plumed pretty Red-legged or Whistling Tree-duck resting standing wandering webbed feet whistling wild banded beauty birds chestnut colored colorful colors coloured colourful colours decorative dendrocygna-eytoni distinct distinctive elegant Eyton's-plumed-duck grass-whistle-duck grazers handsome land-feeders long-necked monkey-duck mottled-beak mottled-bill outstanding pair paired plumage prominent-lanceolate-plumes red-legged-tree-duck red-legged-whistler tall tree-duck whistling-tree-duck wildlife camouflaged mates one leg sitting