Your birds appear to be American Games, a highly variable type of gamefowl that vary also in terms of when they come into their courage. With most, coming into courage is about time stags come into mature feathers. At that point, once social strife begins it does not stop. With a group of stags reared together, all can be good until a change in weather or social arrangements causes a disagreement. You birds are not mature yet but will be in another 60 to 90 days if they mature like mine. If they are in fact gamefowl, then problems will in all likelihood develope unless you have exceptional free-range facilites where discrete territories can setup and even then such arrangements may not be stable.