UFO Sighting in Berge, Lower Saxony on 2017-07-30 14:03:00 - Object observed flying through clouds in photo

While driving on the highway near berge, germany, i took a series of photos of a huge white cloud that was very beautiful. driving through the countryside we were passing some giant windmills that i thought would look nice to take a photo of with the giant cloud in the background. i took the photos and then then i looked over them in my photo gallery and that's when i noticed a black object in the last photo. the object does not appear in any other pictures (although possibly as a spot in the picture i took immediately previously). there are no black spots on the window so i know it is not a window spot. i did not see the object when taking the picture, only upon the review of the photo did i notice it.