Especially during the rut, a decoy will scare any doe. If you have ever witnessed breeding deer, it is not a pleasant experience for the doe. It is a totally dominance thing for the buck. Well before the rut, doe do not pay a lot of attention to a decoy. They avoid it, but it doesn't panic them. As the rut gets nearer you can see the doe becoming more and more fearful of any buck decoy.
