yes. The matriarch here does, and somehow all juveniles know that if they need the chicken equivalent of a cuddle, she is there for them. I have even seen her accept another hen's juvenile into her own nest when she had younger chicks. Photo somewhere; I'll try to find it.when the mother of the chicks weaned them, the dominant hen took over in the protection of the chicks
the subordinate rooster sometimes steps up here. But not always.A good rooster should take this role