My chickens have an acccess to compost. My compost has many vegitables from supermarkets. Mychickens are street smart to eat only what is good for them or tast good. They like fruits and some vegies. hovewer, I noticed that when onion get frozen and soft it is the tag game for my chickens, they...
My personal preference is not to feed commercial feed, otherwise it is the same as buying eggs in supermarket. I feed whole grain, but I ferment it to gain more amino acids developed. Also, I feed yellow field peas and comfrey and stinging nettle. I dry them and crunch them.