So if I have a wild population in my woods and more than one roo was born they would fight ?and If so then how is one roo supposed to protect all the hens?
...what do you think will happen? You want "wild" chickens, then you'll see wild. Roosters will fight, maybe badly injure or kill each other over access to hens. Hens might die from being egg-bound, or from injuries from over-zealous cockerels, or even from fights with each other. All chickens are susceptible to bumblefoot, starvation, and exposure to the elements (especially older or younger birds). I strongly suggest cracking open a book about chicken behavior and reading up about the biology of them. The idea of one rooster protecting a feral flock is impossible, as is the idea that they will all reliably utilize a barn for shelter in the winter. Every population has emigrants, and a learning curve. You'll never see those, though. Those will just disappear.
If you want wild birds, I suggest encouraging the wild native birds instead of setting loose and maintaining a feral population of chickens. That's as terrible an idea as setting loose feral cats. All it does is bring problems and disease if they aren't tended or minded on some level. You stated you don't want them for eggs or meat, or even as companions. You certainly won't be able to monitor, or vaccinate for disease in this kind of a setup, nor will you be able to control fowl mites, lice, or treat birds ailing from other common things chickens might suffer from. You also might check your local laws for feral stock ordinances. In short, why are you running this experiment at all? Wild birds can provide you with all of the things you want with none of the issues feral chickens bring - and the native birds actually belong there. The approach you seem to be interested in here tiptoes dangerously close to complete irresponsibility for your livestock.
Real red junglefowl are insanely hard to keep, as others have pointed out. But they are also treated as insanely valuable birds for those who can meet their high needs and demands in captivity. In other words, people don't turn birds that valuable loose to wander the woods. That's asking for a sudden decrease in the value of ones flock, usually down the throat of a coyote.