I am about 40 miles north of the cali border in Oregon...my coop is not insulated and my girls did great this winter. They had a heat lamp for nighttime and days in the teens but they spent most of the time outside during the day when it was 32 degrees or higher.
Just make sure you give them plenty of room inside...minimum 4 sqft per bird. I have a 12 x 12 coop with 29 chickens inside at night.
Just make sure you give them plenty of room inside...minimum 4 sqft per bird. I have a 12 x 12 coop with 29 chickens inside at night.