Don't ask me to find it, but there were some studies that indicated that the reproductive capabilities of sub-dominant birds decline notably once dominance was established. They were both less capable of breeding successfully and much less-accepted by the hens. There were also some indications that hens would tend to reject closer relatives in Nature's way of encouraging evolution and adaptability. One conclusion of that was that additional relocation of birds would likely trigger the kind of growth that we saw when we did it the first time. DNA relationships and the reproductive chemistry hasn't been looked at closely in quite a while....Since the wrap-up of restocking/relocation. I think it was found that the dominant bird was least likely to be closely related to those in the area that he dominated. It was all interesting, but obscure. I'll just have to leave it with my doubts about any male breeding the hens.