These are our first chicks (Sky-blue ranger, Star-speckeldy and Luna-white sussex) they are all supposed to be three weeks but the speckeldy is a lot smaller and quieter, She sleeps a lot, She is eating and drinking though. Is this normal? A friend of ours said we should give them worms from our garden are they allowed to have these? She says hers go nuts for them. They have all been vaccinated and have all had a booster recently said the breeder. Any advise? Thank you.