we grind our own corn, soybean and sunflower seed (80% corn, 10% sunflower, and 10% soybean). same food we feed the bigger ones just ground finer. we try to keep our food as organic as possible. most of the purchased food has animal rests mixed in and I prefer to stay away from that. We purchase the corn kernel from local farmers that we know are organic producers and we get 100 lbs for about 11 dollars US. The sunflower seeds and soybeans we get for about 60 cents per pound. We mix in about 1 lb of vitamins per 100 lbs and add electrolytes called zeolites ( http://www.zeolit-serbia.com/en/first.htm ). we have found that we have bigger and better eggs and our already grown chickens seem to be less stressed. you can pm me if you need some more info.