I saw those videos of the feeder where the chickens step on a little panel and it opens the feeder and thought they were very clever. I'm wondering if anyone has done something similar with a pop-door? It would be nice if the chickens could let themselves out of their sleep house and into their run in the morning. My run is secure, so I could probably leave the door open at night, but it's been cold. I don't mind shutting them in at night and light to see them all safe and sound, but sometimes they wake up way ahead of me and I wish they could let themselves out. Anybody done anything like this or have any ideas about it?