I really need some advice!!! My one hen has 5 chicks and they are about 8 - 9 weeks old. Now one of my other hens started to lay her first eggs. I worked out that they( the chicks i already have) will be about 13 - 14 weeks old when the new chicks hatch. Do you think the hens will fight and kill the chicks??? (The hen that has the 5 chicks , is the one who has started to lay her first eggs's mom) I need good advice PLEASE!!!!! Annette.