We've had the girls out in the coop since they were about 5 weeks old. They're about 8 weeks old now and doing great. After reading too much info in the books, I'm totally confused about the light/heat. It's very warm here now and no additional heat is needed at night. In fact, we've been leaving the coop door open to keep the airflow up (it's all secured with an outdoor play area). We have the light on at night starting around 10pm. So, they have dark from about 8pm-10pm. At what point if ever do we stop with the light? I thought I read that we should leave on the light for good development? But my hub thinks I'm nuts. He says barn chickens don't have night lights. Also, they pant a lot in the day even though there is a lot of shade. Should I put a fan out there so they can get cool? We only let them free range in the evening when we can watch them to insure our labs don't misbehave. So in the day they're in their fairly large coop/outdoor play area. Thanks for your help! We found a raccoon near our deck the other night and I was so nervous for the girls. But he was going for the catfood and stayed away from my girls. The girls are cuuuuuute! You should hear their cute noises.