I don't know the answer, but I have had a similar thought. We own an old feed-mill the is no longer in business. This means we own about 1,000,000 pigeons, and there nesting grounds! somethime we catch a few to train new bird dogs easily. I was thinking about using one with a stand of fishing line tied to its leg as a decoy. I think something that is alive, and smells like a bird should work regardless of what sound brought in the yote. What do you guys think? It was something I have thought about, but not yet tried.