Drone flight past flock of terns on sandbank in estuary, one flies along

olifants river estuary estuary sand bar vlei sandbank drone shot coast atlantic shore aerial nature reserve waterbirds coastal birds south africa migratory weskus wetlands conservancy terns nature aves no people wetland fly along caspian terns birds bird in flight papendorp wild wildlife birdlife flock natural outdoors in flight fly flock together birdwatching avian stick together ornithology nobody