The closer the bird is to the surface of the water, the firmer and more inelastic is the uplift of the rising air. The bird appears to almost feel the surface with the tip of its weather wing. ↗
After all, we are not French and never can be, and any attempt to be so is to deny our inheritance and to try to impose upon ourselves a character that can be nothing but a veneer upon the surface. ↗
Unfortunately, we haven't found many very old rocks on Earth because our planet's surface is constantly renewed by plate tectonics, coupled with erosion. ↗
If you're in a forest, the quality of the echo is very strange because echoes back off so many surfaces of all those trees that you get this strange, itchy ricochet effect. ↗