Birds do it but bees don't. I've done it, a little. Of course, I'm talking about piloting a sailplane, which is what soaring aficionados call their craft (almost everyone else calls it a glider). The entire point of a sailplane is to gather its energy from warm rising air currents. Sailplanes have no engines, but they do have the usual aircraft flight controls: rudder, elevator, ailerons, and almost always spoilers.