I would have cloned out that aircraft vapour trail. I don't think it would have counted as a major element, so it would have ben legal. It really draws the eye in towards the larger steeple and away from the bird. Other than that, this is an excellent image.
nice shot, a split second earlier and it would be superb, I find the bird and building a bit dark, fill in flash would have been good here, but an nice shot.