Ours will be going out by the end of the weekend, but they will only be in the almost finished coop. It will be secure and well ventilated and they will still be in their brooder box out there for a few more days. Their run will not be finished until over July 4th weekend or early the week of the 4th. My concern has been too much heat. Since they aren't completely feathered out, I don't want them to get too hot. Tomorrow, I'm off work, so Lou Ann is putting a thermometer in the coop in the morning and I will stop by several times during the day to see just how warm it is getting in there. We will do that a few days before moving the chicks out. By the time they move out, they will be 3 weeks old. If needed, a fan will be added, at least in the window so it can pull out any hot air. I can't believe how worried I am about letting them be outside, even if they are still going to be in the brooder box. I think I'm a just a little bit protective!