A hex is on the mice in the meadow as the perfect mousetrap exits his home in the haymow to haunt the deepening dusk. Like all of his ghostly clan, the barn owl prowls the darkness, tending to the balance of nature as his hoots and screams conjure up witches and demons. Is the hex sign protection from them? Probably not. The Pennsylvania Dutch will tell you it's only a decoration, "chust for nice." The owl is "chust for mice."