So all my hens can be fed chick food? And sorry if I sound stupid, but what do you mean wean? When I think of that word I think of nursing mothers. What will they be weaning off of?
Not only can be fed but should be fed chick food. An adult bird can handle the extra protein in chick feed but the calcium amount in layer feed can damage the kidneys of chicks until they are old enough to lay and need the calcium. Feed all chick crumble or flock raiser and set out oyster shell or calcite grit for your layers who will naturally choose to eat the amount they need while the chicks will leave it alone.
Weaning was simply a euphemism for fledging...mom deciding the chicks are old enough to take care of themselves. She will do that anywhere from 4 to 8 weeks...generally around 6. It will be when the babies are fully feathered and mom has taught them to roost, then she loses interest in them and may even peck at them to leave her alone and go be chickens.
Lady of McCamley