It's best to start a new thread. You can leave chicks with them as long as you want. Take them if you want to brood them. Sell them. Let the broodies raise them until they're done which depends on the hen. I do feed all my chickens with chicks starter. You can add a bowl of crushed oyster shells for calcium for the hens. Water in a chick accessable area which they won't drown in. Outside the nest but where everyone can get to ot.Hi i wonder if someone could advise me, i have two broody frizzle hens sitting on eggs i believe the eggs to be fertile from my old english game bantum cockral if the eggs hatch how long do i leave the chicks with the hens and do i provide chick crumb and water to the nest or just leave the mother hens to it?