We have a mirror on the outside of our coop. Our Guineas love to look at them selves in it! They also love chrome bumpers. We had an electrician doing some work at our house and my Guineas were out walking around on a nice sunny summer day. All of a sudden, I heard a lot of tapping and saw three Guineas tapping away at the chrome bumper on the electrician's truck. Unfortunately, he saw it too and wasn't nearly as amused as I was. I was trying to non-chalantly get them away from his truck when he walked over and asked me to keep my "turkeys" away. Then to add insult to injury, one rounded the corner and hadn't seen this man before so her alarm started..... the writing was on the wall. Before long, we had a symphony of Guinea alarms going off. The electrician has never been back. Mirrors, chrome, glass, the water in my inground pool......they love anything reflective!