I am planning a garden and chickens at my new home for my peepers and I want to grow a few things that chickens like that are easy to grow and make a nice supplement for feed. In the past I always give squash and grass clippings . Comfrey was easy and made the yolks deep orange. What else is a good chicken treat for my birds. They may not get to free range much but they will have a 6'x10' run attached to a tractor coop.