I built my coop in the spring time with extra lumber from a large project my neighbors were doing. I live in CT and now that the colder weather is coming I'm noticing that the floor (plywood) of my coop is getting very moist. Originally I thought it was the girls (6 Barred Rock Hens) splashing water around making a mess. Now I am to believe that it's simply moisture from them breathing. I understand how detrimental this can be to their health and am brainstorming ideas to put good not drafty ventilation (and inexpensive) in before the real cold snap hits. I leave the door open for them during the day (see photo) and usually around 2pm I let them roam the yard till they return at night, and then I shut them in. I have a 60watt bulb that is on till 7pm then goes on again at 4am to keep my eggs in inventory. If anyone has any ideas or pointers by looking at the pics that would be appreciated! Looking for something that's quick an effective. I am a new owner this year, so it's a learning experience! Cheers! The long window is covered with plexiglass from the inside.