ONLY eagle-eyed viewers are able to spot the hidden bird in 30 seconds.
The brain-busting image was taken by Belgian photographer Laurence Debailleul.
He captured the photo while climbing Ben Wyvis in North Inverness, and has now become a head-scratching optical illusion.
For most observers, the image seems to be made of rocks scattered across the hillside.
But take a second look and see if you should be able to spot the animal hiding in plain sight.