_If it looks like a duck, acts like a duck and flaps its wings like a duck, conventional wisdom dictates that it is, in fact, a duck. But not always. Not when the duck in question is really a Mojo Duck, RoboDuk or any other brand of spinning-wing decoy that waterfowl hunters use to lure real birds into shooting range.
__Spinning-wing decoys, whose motorized, battery-powered wings rotate rapidly to simulate a bird landing on a pond, are more widely used but no less divisive among duck hunters than when they were introduced a decade ago. The debate whether these faux fowl are legitimate hunting tools or provide an unfair (and unnecessary) advantage to those who use them continues to ruffle feathers at public hunting areas and private duck clubs._