
Since I used my smart phones camera for convenience, I always check my camera lens and viewfinder for any obscurities before I take a shot. I wasn't exactly sure how high the plane was flying, but I figured that it was much higher than what any Seagull, Swan, Dove, or Owl would usually fly, especially alone. Matching the scale of the object with the plane, that would indeed be a very large creature. On a more comical note, it sort of looked like Eva from the Disney film WALL-E, of course that's ridiculous, but still an entertaining thought.
I uploaded a copy of the photo to a computer and ran a few image filters on it to see if I could obtain more detail from the object. When I added the inverted(negative) filter, the darkened areas showed light was being reflected from the direction of the sun, so I concluded the object was actually outside the window. It seems I've done all I could with this photo. I'm posting the photo on my blog in hopes that someone else could examine it and provide any data or insight that relates to the identity of the object.