Just built a 10 x10 barn type shed with a loft inside for my 15 hens and 2 roosters. They have been in it about a week. They were in a "hoop" coop. Chain link panels with hoops over them and a huge tarp covering them from top to bottom. I would roll up the tarp sides during the day and close it up at night. Thought it was getting too cold for them that way, so built them the new enclosed coop. The roosters had gotten sick when I put everyone in the hoop coop a couple of months ago. Started them on antibiotics, they got better and the have been in the garage since then. They were fine and the hens were fine, so I put everyone in the new coop and now the small rooster has an URI and one of the Americauna hens does too. Her ears and beard are sopping snotty wet. She sits in the corner of the yard and sleeps. My rooster was basically doing the same, although more he was more active. I started them all on Duramycin tonight. I am contributing this to stress?? Any thoughts or suggestions? The same 17 have basically been brought up together. My few questions are: The coop is insulated, although still quite cold when I go inside. No draft though. I am using shavings on the floor about 2 to 4" right now. The building is up on cement blocks, but the shavings almost feel damp? I added more and stirred them all up. I also use food grade DE in the shavings. I have 2 small storm windows in the shed, which I keep closed. I do not currently have any additional ventiliation. There are two large double doors at the front, one stays open all day and then the guys get closed in at night. is the coop "too" tight?? The chicken yard is basically nice rich loam. They dig it up and take dust baths with it, although I feel it is too dense, wet and cold to be doing that! What they havent' made craters in is very hard packed. It is yucky when we have rain all day, but does dry out when and if the sun ever shows up!! I think I should really get a huge load of sand and cover the whole yard with it. Again, any help would be greatly appreciated.