As soon as I opened this image I saw the dark “spot” in the center/left (above the roof of the houses behind the farm).  I zoomed in a bit and lo and behold, it’s a bird flying over the landscape.  Question is….what type of bird?  It’s large and when zoomed, it just might have a white head.  How cool if I accidentally included a bald eagle in flight while photographing the Lancaster, Pa. scenery!