Flock of migratory birds flying in bow shape in blue sky at dusk over forest

migration flock birds migratory sky heron egret bow shape bow formation flying blue sky dusk sunset morning tree forest motion group of animals symbol together togetherness majestic environment wilderness flock of birds goose waterfowl migrate migrating geese beautiful wings animal bird group freedom wild flight wildlife nature silhouette parrot amazon amazonian africa asia sundarban bangladesh