Terns sitting next to estuary on sandbank take off

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