Adding my 2 cents - I observed a flock of 20+ chickens raised ONLY on corn. It was pathetic - fat chickens (only 1-1/2 yrs old) that did not lay. Plus they were not active - like couch potatoes. Just sitting all day. Also they were feather-picking and eating their eggs (when one finallly laid one) Their run was just dirt, they had eaten anything green in it. I almost wanted to rescue them. The lady could not understand the problem. People should do a little homework before taking on the caring for an animal. I truly felt sorry for them. Please learn from this.