At night if over 60f or so outside oscillating fan is on.
We would call this phenomenon "winter". Or, at least, November.
![Big Grin :D :D](/styles/byc-smilies/big_smile.png)
My chickens would be digging their sweaters out of storage.
I dunno, I've pulled some pretty damp birds out of boxes for fair check in. To be fair those birds almost always had issues other than being damp thpugh, and I can promise they weren't damp from just having been washed.
Sounds like a ventilation problem. Or roof leaks. Top-hinged nest boxes are notorious for leaking at the hinge.