I have some babies that i put on the heat lamp for .They are in the same coop as my adults are in. At night when everything is closed up and heat lamp is on for about an hour. I notice that my walls started to sweat and then starts to run down the walls. I was concerned that if i kepted the heat lamp on. It would get way to much moisture in there and cause ammonia for the birds. So i turned it off. As goes for the babies they range from 2 weeks and up. So they did have some feathers. I went in there this morning. The wall were dry up .Turned the heat lamp back on. And open the small pop door to let the adults out. Now what can i do to stop this from happening when things are closed up. ????