Wide flock over a lake
A wide flock crosses the frame and leaves a different shoreline. a wide shot of a still lake at dawn with mist on the surface, a long flock of dark birds crossing the whole frame left to right at several depths, the nearest passing close enough to blur across the lens and hide the water for a beat, and once they are gone the lake is a wide desert salt pan with the same horizon height, mist replaced by heat shimmer

