birds circles dark ducks fauna light movements moving native fauna pond reflections ripples rippling silhouettes swimming three water water birds water fowl wild ducks wild life active Australia Australian bird black colored coloured flowers gregarious honeyeater nectar New Holland honeyeater Noisy Phylidonyris novaehollandiae productive breeders small social Southern Australia swift vocal white wildlife yellow biology dead flora insects nature organisms tree unusual web appearance aquatic bird circular common fowl native-fauna omnivore omnivorous peaceful placid swamp-hen textures waterbirds waterfowl wild-life duck animal hippopotamus zoo domestic feathers pigeon pigeons plumage