I have 18 ISA Browns at 16-18 weeks of age. They have been with 10 older layers and a rooster that have mostly accepted them though the older hens can be testy in the hen house running them out once in a while but they do roost together without incident. They all free range during the day but I've been keeping them penned to the house and run until the ISA's start to lay in the house. So my question is what influence will the dominant hens have on these new layer's egg laying. Could they delay or shut down these younger ones or will they find a way to lay no matter what with time? I have 8 hen boxes for the flock of 27 though only one or two are used with regularity.