My birds get higher protein Show Gold Chick Grower Finisher pellets. I start my chicks on it now at between 3 and 4 months old. I only feed them the Show Gold. My older girls have been getting the Show Gold mixed with their regular layer except when they are starting to go through their molts. I have also given the older birds Game Bird feed breeder pellets which is higher in protein. My Heritage birds were started on the chick crumbles then switched over to the Show Gold and have been on it ever since.