I live way out in the country. Everyone here has chickens, cows, horses, sheep and the list goes on. We do have one rooster however he is young and does not even crow yet. All of our other neighbors however have very large very loud roosters who crow as early as two and three o'clock in the morning. Also our "neighbors" are a good distance away. There is a good bit of land between us. So I don't believe that noise would be a motivator. As far as shooting someone, the reason I mentioned it at all is due to thee fact that whomever mutilated the first hen clearly used some sort of blade. My objective would be not to fire however but to deter the armed individual from my home. My chickens yard / run is attached to the side of my house. So whomever is doing this is literally feet away from my family.