Duck-Fly and Quack

This drake mallard duck was singled out during a spring courtship flight.  He was part of a group of drakes circling a pond with a hen and he obviously came very close.  Notice that his feet are not deployed so he wasn't slowing to land.  The angle of the wings gives the composition a very nice diagonal line.  The real bonus is the wide open mouth as if he were quacking directly at me.
100-400mm lens, 1/1250 second at f/5.6, ISO 400.