beautiful black-necked swans cygnus melancoryphus swim in a blue lake.

water bird shore wave waterbird animal wildlife waterfowl wing beautiful black-necked swans cygnus melancoryphus swim blue lake ripples shiny argentina calafate lago argentino swans swan melancoryphus cygnus glare picturesque patagonia argentina argentino ripple surface clean clear shiny patagonia calafate lake south america grace avian ecology aquatic peaceful bird black neck black-necked elegant black ornithology lakeside waterfowl elegance wilderness graceful plumage swim natural birds pond wild beautiful blue white