Impressive black-necked swans swimming past in a row on pond

blacknecked swan cygnus melancoryphus swan waterfowl birdwatching ornithology bird aves anseriformes wildlife native birdlife conspicuous south america white black neck long neck nature bill beak anatidae cygnus bird behaviour avian animalia behavior wild feathers shaking head paddle swim reflection water birds fauna animal observe animal behaviour zoology plumage distinctive static shot single file in a row group water surface scratching shallow focus outside outdoors