Are you aware that you can effectively "free range" Bobwhites?
I raised pointing dogs for 40 years, and trained them on pen-raised bobwhite quail because the no-till farming practices ( and fox ) had decimated the native quail & pheasant populations. I kept a dozen birds or so in a "recall cage", which is nothing more than a wire mesh cage with a cone-shaped chute built in to the side. The idea is to leave one male in the cage while releasing the rest, which spend their time grazing on seeds, insects, etc. in a natural setting, eventually working their way back to the cage where the male left inside has been calling to regroup the rest of his "buddies". The returning birds re-enter the cage through the recall chute (made from 1/2" hardware cloth), which is at ground level on the outside wall & high enough off the floor on the inside that they can't/won't try to go back out.
If you have the room, you can build a permanent coop for them with the same sort of chute; just have to build a flap over the outside of the chute to keep out predators.
The other thing, besides predator protection, is to keep them dry. Wild birds, because they have access to seeds, have an oil in their feathers to help them stay dry. Pen-reared birds, fed primarily on commercial feed, lack that oil; getting chilled when they're wet can kill them.
Last time I checked, places like Dunn's Supply Store sold the portable recall pens. Also, you can probably build one easy enough from DIY video's on Youtube using the same clamps & pliers used for making rabbit cages.
If I remember correctly, bobwhites are the one kind of quail that we (in WV) have to get a permit to keep.