I have chicks that are six weeks old today. They were raised in the coop from day 1. Saturday (five days ago) we opened the chicken door into the enclosed run and began to let them explore the run all day, while leaving the coop door open so they could go back into the coop if they wished. We showed them how to get back into the coop by putting them up the ramp and into the door. Yesterday and today I've seen some of the chicks going up the ramp into the coop door, so I know they know how to do it. The problem is that at night when it gets dark they aren't going back into the coop. They pile up in a corner of the run under the coop. It's kind of a pain to crawl under there, grab them, and put them into the coop. However, I'll keep doing that until they figure it out. My question is, how long should it take for them to figure out that they're supposed to sleep in the coop?