I've got a hen who we have seen sitting in the nest box for a day and a half now. I assume she is going broody. I'm a first timer, so this would be my first broody hen. How will I know for sure that she is actually broody? If we want her to hatch some chicks how soon do I need to get fertilized eggs underneath her? What's the process for letting mamma hen raise her own chicks? What do I need to provide for the chicks that is different from the regular flock? Do I need to separate mamma and chicks from the rest of the flock? Flock details: 6 hens that are about 9 months old. 1 australorp (the broody one), 2 Easter Eggers, 3 Barred Rocks I give them fermented feed. Their water is in a 5 gallon bucket with nipples on it. Anything else you need to know?