We picked up our first 4 laying hens at a bird auction this weekend (Barred Rocks). Well, we hope they're hens, but they could all be roosters We didn't get any information as to their age, but they are not laying yet so we bought an organic chick grower feed for them since I read that layer feed has too much calcium and could damage their bones. We have the opportunity to pick up some 28 week old Leghorns today that are laying, but it just occurred to me that they may need to be separated in order to feed them the layer mash. I would prefer to keep them all together, but how to deal with the feeding issue? We do plan to let them free range mostly but will have feed in the coop for them just to be sure they're getting enough. Any advice would be appreciated!