I have quite a few hens. While most are young, some are older. The older ones are not great egg layers anymore, but one thing they are good at is getting broody. They find an egg and proceed to sit on it all day. So I figure I have two choices that I am comfortable with for dealing with older broody hens. Either make chicken tacos or have them incubate eggs. Since I can't have a store bought incubator (I'm on solar and very miserly with the kilowatts), I can turn to Mother Nature's incubator -- the hen.