steve Tall - great book, thanks for the information. When I was going to Jr college I worked at a dairy, Chickens we kept were able to fly up into the attic of the house at night where they roosted. This was in a warm area of Colo. During the day they were free range, best chickens and eggs I ever ate. Their menu was picking grain out of what was not completely digested by the cows, bugs and what ever they wanted to eat. Some times during the winter we would supply them some grain. Yokes dark yellow, eggs like few today will ever know.
We also had an old peach orchard where we would turn out some young pigs in the late summer and fall, they would eat the peaches and when the peaches were gone we ate the hogs. The chickens would also pick on the peaches, clean up our corn and hay fields.
There is no better eating anywhere!! Eggs, fresh milk and pork a few turkeys and chicken along with a few store bought potatoes and flower for the gravy was most of my diet for 2 years.
Years later I would talk to a PHD who was in poultry science, he talked about conversion ratios etc. Too bad. future generations will never know.
My first ex wife's uncle made good money carbonizing chickens, he was an artist. Had the biggest house in town and the biggest long haired cat I ever saw.