Lovely wings position. I find the BG a little distracting. I would also fix the horizon and perhaps a little more room on top and in front of the Cranes.
I echoe what Maxis said. I like a lot the composition and I think that it would be much better if the bird doesn´t overlap but it works in the way you posted. Love the light reflections produced by the waves on the belly of the cranes.
Wonderful action captured in this image David and I agree a little more canvas on the top would strengthen this capture. IMO the background adds to the natural feeling of the environment and takes me back to the days I spent in Bosque. Great timing and well done !!!