I live in Southern Indiana. I used heat lamps and wrapped their coops with a moving blanket and then a tarp to keep it dry.
I have chickens, ducks, rabbits, turkeys, and guineas in the barn.
I have a 24x36 metal pole barn we built this summer. We are trying to figure out the best way to insulate it. We were looking into spray insulation, but I was worried my bunnies and birds would eat it. We have a boiler to heat the barn, I just want to keep the heat in the barn. Thoughts?