We put our 3 chickens with our laying pullets. Two of the chicks are now 13 weeks old and the third is 12 weeks old. The 2 flocks are really the same size, thankfully no blood has been drawn, but 2 out of our 5 laying pullets pick on the little ones when they get close. They've been together for I guess at least 2 weeks. The chicks are still scared of the bigger ones, even if the bigger one doesn't pay attention to them. How much longer will it take for them to get settled?