your image is very grainy and full of noise,you see it so much in the sky and in the water, for such a close up shot and daylight ,your settings are way off ,i suspect your iso is cranked up big time to get so grainy,my d50 doesn't produce anywhere near like that, as for the composition its a great shot having a cooperative bunch of pooping birds waiting for their next bombing raids to begin, is quite comical. ( check your setting ! ) thanks for sharing.