Nice background and good lighting on the seagull. I wish he (or she) were a little sharper in focus, and the fence competes for his attention. Still, he retains a lot because of this marvelous light.
The lighting is great - good sun angle. The subject is sharp and looks deep in thought. Composition could be a little better, I think, if the subject was less centered. That fence in the background does nothing but clutter the shot, but you probably would have been busted for vandalism if you ripped it out.