MY wife and I are fairly new to the chicken world, but we want to start mixing our own feeds. Due to the fact we live in Montana, corn and soy are difficult to come by. We have wheat and wheat screenings that we can mix abundantly (approx 12-13 protein) along with access to field peas for higher protein levels (20-24%). I have heard barley is bad for chickens, but haven't heard anything one way or another concerning peas. Any advice would be greatly appreciated.