I didnt read through the entire thread, so I apologize if this has reeatedly been suggested, however I recently had great success with the lit coop concept. I had introduced my chicks to the coop many times while they were still in the house, just to get them used to it. Then when they were moved outside I locked them in there for two days, with food water, etc. Then I opened the door, and waited for night.....each night they would nestle down to sleep somewhere in the run, and not go into the coop, even though I knew they were navigating the ramp in and out as they pleased during the day. Eventually I got sick of chasing them around to put them away at night. So I had my husband install a light. I turned it on with a timer at 10pm, and came outside at 10:30pm to see if they had gone in, and SURPRISE SURPRISE they HAD! We use this trick every night now, and actually last night I had the younger chicks locked in the coop to get them used to it, and when the light came, I noticed the older chicks scrambling and stuff to get into the coop when the ramp wasnt even up, LOL So it REALLY worked, and I wish I had tried it sooner.