We had a broody hen and we decided to switch the eggs under her with chicks. She took to them right off no problem. But we had one other chicken who became aggressive and wanted to kill the chicks. Our Momma chicken is not great at defending them, so we separated her into a smaller run within the run of the other chickens. They have not rejected Momma as we give her moments to take a dust bath among the others while we care for her chicks; she has her spa-moment. We are at about 2 weeks since introduction of the chicks. This seems to be working but I am concerned about when we should try to allow the Momma and chicks to join the larger group? Can anyone give some advice on how old they should be? The chicks still look very little, and since there are only 3 I am afraid one will be killed even though momma is dominant, and not afraid to kick the buts of her like age sisters.