I would not simply put a rooster on day old chicks and expect benefit and definitely not a hen / pullet without expecting bad things for the chicks. Somebody just hammered out on a keyboard a lot of off the wall ideas that need scrutiny.
Walk system came over from Europe and was adapted to US. Bloomington to me was not all that southernish because lacked connectivity with Kentucky. We had serious walk action where there would be 20 or so just under me and my brother as kids. Grownups had a lot more scattered over the county.
I grew up in southern Indiana (Spencer county) not leaving until mid 30's age. Kentucky was a border state. I had family in Kentucky that fought opposing sides. Indiana kin only forth north. Kentucky north or south was an opinion that people disagreed intensely over.
Kentucky part of family...
I do not consider the Ohio River Valley bordered by Indiana and Kentucky to be southern part of the southern US. Yet gamefowl were kept there as I and even you described until at least the late 1990's. A lot of arrogance involved assuming games not kept north of the Mason-Dixon line.
Walk is a location away from cockyard where a game cock and hen(s) were released to breed at start of production season. It was an essential part of gamefowl production prior to advent of complete feeds. Even with complete feeds, many consider walk reared games to be superior owing to forage...
Pictured birds appear to be American Games. Wheaton color pattern, peacomb (evidence of Asian influence), white legs, and high tail all characters in picture that distinguish them from Red Jungle Fowl.
A portion of my game flock went through a feral / dunghill spell during the late 1970's through early 1980's (almost a decade). They fed themselves and the population oscillated quite a bit. Area covered was several acres centered on a hay pasture with a tree line and bramble patch as a well as...
We used to do it every year using game chickens. That is breed I would use. We also had good control over predators like raccoons and foxes through hunting. Raptors were not as abundant owing to DDT and some people actively shooting them.
The flocks were not truly feral as we managed who the...