Well, maybe. The strap has some light/dark coloration woven into the fabric, but unlike the item in the original picture it does not have any relief to it. Strap looks and feels smooth. However I won't rule that out. Also I can't at this time rule out any of the other suggestions.Looks like the strap
I did get some cool night time owl pictures years ago of one that caught something in front of the camera. Will try to find them.owl wing