graceful black swan resting on one leg

black swan bird wildlife nature resting sleeping oneleg elegant graceful serene peaceful tranquil majestic posture balance water lake pond reflection beauty monochrome feathers avian solitude calm poise symmetry natural exotic unique artistic ornamental outdoors wild animal stillness aquatic birdwatching wetland conservation habitat rare elegance motionless closeup portrait scenic artisticshot stockimage minimalist tranquilscene exoticbird balanceart avianbehavior luxury ornamentalspecies blackfeathers