I've had my 5 girls for about a month now. Had the same daily routine ever since. I wake them up around 7;00 with a dim light, put food and water in there, go to work, and around 9:00 my husband lets them out into their run. I woke them up at 7:15 this morning, watched them all jump down from roosting and go to their food and water. I have the day off, so I went out at 9:00 and opened the chicken door to their run. No one would come out. They would stick their heads out and look around, then go back in. My husband said they are usually running each other over to get out. I looked all over the barn, around their coop that is in the barn, and all along the run and their is absolutely no signs of any predators visiting that could have scared them. The weather is fine. I tried coaxing them out and nothing. Should I just not worry about it and let it go since they all seem to be eating and drinking just fine? Should I force them out? Or are they doing this because they somehow know I planned to deep clean the coop today? Any advice would be greatly appreciated.