what to sow

I grow cabbage. lettuce and carrots for them in the garden. I also gather dandelions when available.
They have their pellets during the day and the greens etc are put in the run later in the day.

I just throw in few extra cabbage ,and I grow chard round the edges of various beds looks lovely with its diff colored stalks and leaves plus the chooks love it ,they get the heads of my sprouts cauli leaves

If I have a patch of spare ground on the plot, I chuck a handful of poultry corn down.  Mine love the newly sprouted green growth, its much cheaper than buying seeds for anything else and it will germinate nearly all year round.  I just pull out handfuls and bring a carrier bag home for them.  If there are roots and bits of soil to inspect and sort through, so much the better in their book 

I also mulch various bits of the plot and sometimes beds at home with spent bark chips from the run.  I often get an odd wheat stalk growing, so I leave it.  It pulls out really easily and they go crazy for the seed head, then attack the rootball and finally have a good peck at the leaves 

Its the wheat that germinates without fail and its the wheat grass they love to eat, so the cheapest poultry corn wlll do 

If they get veggies as well, they will be in chicken nirvana, but I bet it doesn't last long