Beautiful; i feel the bright green part can distract eye straight down from the object of interest; so my feeling is to trim out the part below the dark green border
Yes, that was also my thoughts. Good image of the bird.
Those are pretty birds. All terns are for that matter. So delicate looking but with attitude. That channel marker must have had a light on it at one time to have that steel like that. Whatever it is looks like his majesty appreciates the little bit of additional height from which to view his realm. Speaking of which, I think I get what you were doing with the choice of crop/format. But similar to the others' comments I'm not sure that it works all that well. On the other hand I don't really have any constructive suggestions
Nice but looks a bit elongated, did you crop or resize without constraints?