I've never raised any Game chickens can they be free ranged with other chickens are they have to be penned up.
ditto^^^:dgames, upon reaching a certian age, will kill each other. Even nest brothers, will fight to the death on the yard as early as 6 weeks. Hens will also fight, but not usually to the death of one, but it has happened a time or two on this yard.
You must keep an eye on your young roos, and be prepared to seperate them when they start fighting in earnest.