Wildlife tracking shot of a beautiful black necked swan, cygnus melancoryphus paddling and gliding gracefully on a tranquil lake environment and wagging its tail

black necked swan cygnus melancoryphus wag waterfowl south america anatidae freshwater marsh lake species bird wild tail wildlife animal nature natural habitat close up portrait outdoors water beak bill majestic argentina waterbird beautiful feather ornithology environment swim pond buenos aires park fauna graceful macro birdwatching neck river aquatic elegant elegance purity glide