While this 16" hollow Great Horned Owl may appear to be just a great decoration, it also has a practical purpose. Just set this up outside and it will keep birds away. It turns out birds are afraid of owls and they aren't smart enough to tell the difference between fake owls and real owls. Stupid birds! For more stability, just remove the stopper in the bottom of the owl and fill it with sand. Great for protecting your boat or deck!