I currently have a group of 13 eighteen week old Ameracanas. I've been feeding fermented grower food for the last 2 weeks. They absolutely love it! My question is, how much do you feed? They get out to footage some evenings for a couple of hours and they get kitchen scraps but the vast majority of their nutrition comes from their feed. It doesn't seem to matter how much I give they clean it up in about 10 minutes. I've been feeding twice a day and aiming for about 1/3-1/2 cup per bird per day. I don't want to make them fat but I don't want to under feed either. They act ravenous at feeding time. Thanks!