Hi there, I've had a AUTO feeder in my chickens pen for a few months and they wont use it. I have held them on the panel and shown them how to open it but they are terrified of it. The metal sound of it opening and the bang that it makes when it comes back down makes them ALL run at the speed of light! If i place a rock on the panel to keep it open, they will use it but still not on there own! How can I show them it won't kill them? Thank you ALL in advance!