I noticed a strange hole in the clouds and took my phone to take some pictures just for fun since the hole in the clouds was really unusual. At the time of the photo I have not seen any UFO. Only some days after, I was checking the photos and realized it had a strange dark UFO where the hole in the cloud is. Initially I thought it could be a bird or some balloon, but I took several photographs, one after another, in a matter of 3 to 5 seconds, and the UFO Sighting only appears in one photo. I did some contrast analysis in the photo and it doesn't resembles any plane or helicopter or bird that I know. MUFON CMS# 90421 Archipelago of Azores 2/24/18 Region has had 6 Reported UFO Sightings to date.