I'm needing some advice. We currently have a 2 year old hen (free range) and will be getting 2 pullets tomorrow (around 14-15 weeks) . Once we introduce everyone and they start to feed together, should we go with growers pellets for everyone or what is best? We've only ever had adult hens and never got them this young before. Also we are in New Zealand and I don't think we have most of the brands available here in chicken feed, like purina.