A delicate black-necked swan grooming its white feathers with its beak while floating peacefully on a pond

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