bird birding Dendrocygna javanica duck ducks flock Incredible India India Indian Whistling Duck Karkala karnataka Lesser Whistling Duck Lesser Whistling Teal Pakshikere Tree Duck whistle whistling duck Whistling Teals feather reflection water whistling White-faced Australian 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 wild faces white faced birds mates one leg pair walking sitting beak close-up eye fly wing