Get some birds for a barnyard flock, scatter some feed, and you’ve got a meat source.
More complicated raising pigs, and way more expensive raising cattle.
And speaking of pork, how about all those feral hogs out there?
Feral boars are pretty much inedible. Between chicken and hogs you left out rabbits. If you have a way to cheaply feed them.
If I see a feral pig when hunting, it will go down. They are a pest here and a pain for farmers. No limit...