the black-necked swan (cygnus melancoryphus)

bird animal waterbird ducks wildlife beak duck waterfowl nature grass goose mallard wing swan green water lawn meadow black-necked cygnus melancoryphus largest native south america body plumage white black neck head greyish bill adult animal animals avian avifauna beak beautiful beauty bird black colour swan closeup creature cygnus melancoryphus elegance fauna feather feathered game lake natural nature ornithology outdoor outdoors park pond america water waterbird waterfowl white color wild wildlife zoological