Yeah, besides the "sky", I thought that it could maybe be a little bit brighter, with regards to the stork itself. However, it's of course rather difficult, considering the amount of light and the angle of it. We don't want the details from the stork's feathers to disappear either.
But maybe a small brightness/contrast adjustment could do the trick... just a little bit :-D. I think that's just a "personal taste" issue, as the pic in itself captures the details; provides a "rare" shot; is sharp..