My first impression of the object of interest is that it's a bird.

Having taken many photos of various things in flight I will add that I believe that it's flying from the left to the right of the frame and its wings are at the bottom of a stroke, just prior to being raised.

Over enlargement, over enhancement and over active imagination could even lead some people to believe that a natural rock formation on the planet Mars is actually an ancient artefact from an alien race.