hi, First time chicken owner here and loving it. I really enjoy letting my chickens free range through my backyard and garden (before I have plants I care about sprouting). They love walking around and eating grass and who knows what else. My concern is that while they are out eating all the stuff off of the ground that they are eating less of the starter feed and therefor missing out on some of the nutrition and benefits of the specially formulated food. I know the chickens are able to determine what they need to eat. But is letting them free range at this young age detrimental at all?