Yes, I've already started reducing the raccoon population. They were getting into the garden to go after something - not vegetables yet, maybe voles or toads. I'll definitely want to trap for foxes.
What breeds of chicken have people tried? The funny thing is that most of the world seems to free-range chickens, but the US doesn't. I know I won't want to have anything to do with cornish cross.
So what we've decided to do at this point is first, try again introducing the quail. But this time, instead of putting out adults that someone else raised in captivity, we're starting with 100 day-old chicks. We'll feed them with initially with commercial mash, but pretty quickly move them to the weed seeds and insects they're going to find at the farm (they'll be kept at our house for the first six weeks.) After the first six weeks, we'll move them to an enclosure out at our farm for another 4-6 weeks, transitioning them from the enclosure to the wild. We'll do our best to provide extra cover options and we'll provide supplemental feed from the game feeders over the winter, like we did last winter. I think we'll just plan to do that every year until a population survives.
Next, we're planning to try guineas in the spring (thanks Shawn - another farmer I talked to here mentioned them too. I hadn't really heard of them until the two of you mentioned them.) Guineas are supposed to be pretty well suited to free-ranging. We're debating turkeys, since they're big enough to fight off some of the predators, and the heritage breeds aren't too far from wild. (Thanks Jay for the suggestion.)
Finally, once the guineas are adults, we're looking into breeds of chicken that are recommended for free-ranging. Don't know if we'll ever pull the trigger on that, because we'll have to give a lot of extra thought to a fox-resistant coop arrangement.
In the meantime, I'm going to continue to trap out the raccoons, and just plan to do it on-going. As long as the buggers are bothering our crops/livestock, I can legally take them out. I'll have to keep an eye out for fox, I'd be surprised if they aren't there. I think fox, area dogs, and coyotes will turn out to be the real problems. I suspect Tyler's right, and even working to keep the predators down, we'll lose most or all of the chickens each year if we try that. But we may end up doing it every year anyway, because the free labor dealing with bugs and weed seeds will end up being worth it. As it is, we're spending much more buying and running equipment to deal with the weeds than the chickens would cost.