An early start on my local reservoir paid off the other day with some nice calm water allowing me to capture the reflections of the Common Terns as they skimmed across the surface...
Nice work on hand holding the 600.
Very nice details, the water drops and the back splash point really show the behavior pattern.
Nice pose on the turn and colors are really good.
The only minor idea is just a touch more room on the right, not really sure though.
The reflection is very good, especially at the beak and that small morsel he has in the beak was a great bonus.
I think Tony's composition is good here. Normally you do want more room "to fly into", but the attention is so strongly drawn down with the head position and reflection, that I believe this works as composed.