Every autumn my girls move from the summer coop to the winter coop. I've used the same winter coop for about 6 years, and it has always been great - nice and dry, good ventilation, etc. This year, however, the humidity in there is intolerable. I'm having to do a complete change-over of the bedding every 2-3 days because everything is so wet and gross. What could the problem be? I checked my roof vents; they are clean. I made sure my waterer isn't leaking; it isn't. There are fewer hens in there now than I have had in other years, so that isn't it either. I'm at a loss as to what may have happened - anyone have any ideas?