I have a flock of 10 hens and 1 rooster of various ages (ranging from 2 years to 18 weeks) of various breeds and sizes. I have also just acquired a separate group of 15 production layer hens (ISA Browns). They are ex stock from a chicken farm, in their second season of laying. After keeping them in quarantine for a while, I am wondering what would be best. To introduce 4-5 of them at one time every day or two? Or introduce the whole bunch at once? I'm really not sure what to do, I can see pros and cons in both ways. Anyone got experience/advice for me? It would be much appreciated PS: I always do introductions at night so that they wake up together, so whether I introduce a big group in or smaller groups in, I'd be doing it at night.