Close up of a black-necked swan sinking its body underwater while searching for food on a lake

peaceful migration nature feet flock swim aquatic south american palmation water environment lake looking coverts swan wilderness searching fauna vegetation delicate natural palmate behavior underwater plumage migratory blacknecked bill bird feathers waterfowl white native sink specie wings black cygnus exoticism food wild neck habitat lagoon beak head float pond melancoryphus