So, we have what we thought is a nice, well planned coop for our chooks. It is 4' x 6' with nesting boxes bumped out one end (so it is easier to gather and doesn't take up coop space) inside are 3 roosts. The coop is 3' off of the enclosed pen (which has a roof over all of it) and the feeder and waterer is underneath the coop. The coop is built with open eaves and vents at the lower sides so it would have good air circulation. We have the sides where they will slide open so it is super easy to clean out (we keep it clean and use PDZ under the straw) so I don't think sanitation is the issue here. This year the hens have been roosting on the roof for the night instead of going inside where the rooster is all cozy. Tonight our temps here are going to be in the single digits so I went out after they went to roost and put them all inside with the doorway shut. Just wondering why they have decided to quit roosting inside? I know the pen is sheltered and it stays nice and dry but?????