I have already 2 roosters and 6 hens that are 8 months old. I have 6 hens that are 4 months old and one of them laid an egg today. I keep the younger ones in my basement in dog runs. I want to mingle them with the others. I have a shed and a run so there is a lot of space. Should I put them in and gate them in a part of the shed to protect them as well as are they ready for colder nights.