I just say to my kids it ant right having more then one wife or husband... I Keep it simple.These guys will happily operate as polygamist too. Their behavior changes markedly when they do. I am trying to keep things relatable to kids operating from expectations on monogamy. We can do polygamy later. It will not be fun explaining variations in human breeding systems.
So what your saying is the hens that aren't broody take over rearing the chicks from the broody hen, while the broody hen gets to hatching another brood? ..Behavior similar to typical flocks until roughly May. Then the games at least have capacity for going broody themselves. Additionally they take over rearing first brood as hen starts another clutch. The behavior I can find no documentation on in wild jungle fowls so maybe a developed through domestication. It does have survival benefit when rooster has only one mate.
In a way, yes. Except if the rooster(s) mate falls victim as prey then he will have no other way of passing on his genes unless he manages to find another mate.It does have survival benefit when rooster has only one mate.