I currently have 3 chickens and 2 Guinea hens. My Red cross chicken has been broody on and off. I should be receiving 6 fertilized eggs this week. I want to put them in the coop for her to hatch. I wanted to make sure that the Guineas and others don't bother her or the chicks so I made a cage and put inside the coop. I have many questions such as when the eggs arrive and I put them in the coop will she sit on them right away? Does she have to sit on them every second? What if she gets up and walks out for an hour or two, will that affect the eggs? WIth cold weather this week...should I heat the coop? I would love your tips, opinions, and wisdom.