Fuzzer,
We are thinking along the same lines. I want to grow food for the cheeps too. So I started thinking "Well, what do they like that I like? If I plant for myself and just plant more than what I think I can eat then I will have surplus for my buddies.
-So, my first thought was collard greens. I like them and man do the chickens mow through them too. I'm guessing they would like the leaves of any brassicas.- I'll find out.
-I have lots of potatoes already planted. Any questionable ones or extras can be boiled up occassionally this winter for chicken food. (I keep reading that potatoes must be cooked for chickens)
-I'm growing some parsnips. I don't know if they will eat them once cooked but I'm guessing they will. They are sweet and tasty to ME. Throw a couple parsnips in the pot for the farmer and a couple for the birds. Costs nothing extra.
-I have read of using comfrey as chicken fodder too. I planted some this year for the first time and haven't got to try it yet as chicken food but the friend I got my starts from said HIS chickens eat the comfrey.
I'll be interested in any ideas others might be working on for feed supplement.