Flying birds snapped out of focus have been responsible for hundreds of historic alleged UFO photographs.
They are known as a blurfo.
He told Express.co.uk: “About the picture, watching the original source, I can say it’s most likely a bird.
“The shape taken during the bird’s flight is often mistaken for a UFO (blurfo effect) like a case I exposed two years ago.”
He provided details of an historic case that was exposed as a bird and images of birds in flight next to alleged UFO pictures to show the similarities.