Hi guys! I'm thinking about raising hens for laying and I'm a beginner, I have a couple question! 1. How many on average will a hen hatch at one time? 2. If I let her hatch her chicks would it be ok to let her just hatch 2-3? 3. Should you keep the chicks and hen away from the rooster and other hens? 4. If I decide to incubate some eggs that hens won't go Broody, how to do tell if their fertil? I know you need a rooster but how do you make sure the egg is fertil before you incubate?