Storks Flock Flying and Gliding in Spiral in The Sky, Migratory Birds

storks flock flying gliding spiral migratory birds blue sky background migration avian wildlife nature wings habitat soaring journey flight airborne group formation vortex winged aviators aerial travel roaming transience thermals movement wingbeat airspace altitude instinct destination route pattern majestic graceful greenish crane flemingo track peaceful tranquil ethereal phenomenon natural