I always smile when I watch people install plastic owls to keep away geese or ducks. Sometimes it works: for a day or two. But wildlife is not a gullible as we are.   They quickly realize that its just a hunk of big-eyed plastic as this resting mallard on a dock in Oxford Township recognized..   Moments before I came in from the water for a picture about a dozen other ducks that were snoozing next to the owl departed. They knew the stranger in the boat (me) was more of a clear and present danger than the lifeless guard owl on a secluded dock on Whisper Lake.  And its not a one-legged duck, just a resting position.