Migratory flock of Caspian Terns at beautiful Olifants River Estuary

migratory flock caspian terns beautiful olifants river estuary estuary wetlands terns birdwatching aves ornithology takes off sandbank coastal birds waterbirds in flight south africa nature reserve stick together fly conservancy avian wetland natures patterns vlei flock together flight birds sand bar wildlife wild coast shore nature natural outdoors no people nobody aerial drone shot atlantic clear water patterns togetherness fly over