What immediately draws my attention is the sheer number of birds in flight... it's almost like a carpet of wings beating against the sun.
In that regard, it looks real excellent, and even the sunset sets off well against the shoreline and the water itself. However, my only issue (and one to consider) is perhaps the shore itself just looks like black paint slapped all over it. It's way too dark to actually see, for a photo capture. (Sorry, I call them as I see them. )
Regardless of the distraction, it still is, overall, a really good picture. All the birds in full flight against the sunset, looking for something better... I can absolutely believe that.