I found these objects recently when looking back on photos from a trip to the Czech Republic last year. I do not remember whether or not I was aware of the objects while the photos were taken, but I do seem to remember thinking they were quite odd. They could have been birds, or perhaps foreign objects on the lens, but all pictures before and after do not have any such objects, and the passage of time in between the photos would suggest that these objects were not birds or known aircraft. The town were these photos were taken has some history of ufos and the paranormal, including a crop circle that appeared in 2014.