Nice light and superb details on the face and bill. I'm usually OK when the eye and face are sharp but I agree more dof would have been good here - you had enough light to raised the ISO and stop down - always easier to pin-point in hindsight though eh!
Thanks for everyone's great comments and suggestions.
Yes, in hindsight I should have stopped down a bit to increase my DOF, which is one thing I need remember to do but seem to forget when the subject is so close. If I remember correctly this Limpkin was about 20-25ft standing on a piling so I'm guessing I would have needed at least f9 to f11 to gain another 4" or so of DOF?