In late fall I planted a plot of annual rye over last years compost pile, about 800 square feet, because it was so late in the year I did not think anything else would gereminate. The rye did great, even in a brutal winter. I let the flock into a small portion of it in late winter and they ate it down. Later in the spring I let them into the whole plot and they completely ignored it. At that time other things were starting to be available, so I guess rye is not one of their favorites. Now that it has started to seed they seem a little more interested. I had planned to plant a summer cover crop in this plot, but maybe I will just let it stay put. It has put down a thick mass of roots that would add organic matter to the soil and I can start bringing in leaves in the fall for the 2015 compost pile. For the 2014 compost pile, I think will try to accelerate it's decomposition a little, so I can sow something a little earlier, like maybe clover in late October and let that over winter.