Hello, I'm new to the forum. I'm a first-year chicken novice, and am looking for some cold-weather guidance (I live in SW Wisconsin). My rolling, 6'w x 9'l x 8'h coop is insulated, wrapped in tar paper, sided, has heat lamps, and a deep-litter floor. I've got a heater under the water, but it's on the same timer as the lamps, so I am finding some ice on the water each morning now that it's cold. Nighttime (when the hen door is closed) ventilation consists of 2, 4" diameter openings near the coop ceiling, on either side of the structure.
Most of the chickens seem to be dealing with the cold temperatures OK, but my Cochin rooster is often visibly shivering when I go into the coop in the morning. While the others venture out in to the cold, he stays inside. Is there anything I can do to make him more comfortable (short of bringing him in the house...)?
Should I keep offering the chickens the opportunity to go outside each day, even if it is (IMHO) pretty darn cold? Thanks for your help.