I am raising meat chickens for a 4-h sow in February. I have researched about how to raise them right but everything I find is for raising them in the summer when you don't need to provide a lot of heat. The only predators it talks about are like Hawks and very small ones. I however have coyotes. I have six chicks coming next week and have no coop ready for them after they come out of my Garage. My winter gets down to about 20 degrees.. Do I need to keep a heat lamp on them even when they are older? Would an enclosed horse stall be a bad place to keep them? How big a space do they need?