If you have been around chickens as much as I know you would know a "game" rooster/hen when you see one. They may be called diffrent types but they all have pretty much the same build.
It is not like they do it natural either. They cut their cones off(with knives) so they can not be ripped off, even do their waddles too if needed, and cut their spurrs off. You think, oh so no spurrs not much harm? No, insted they put razers on their feet for spurrs.
It's sick and even worse than dog fighting because people do not think of chickens the same as dogs. "Oh my gawd, how cruel, poor dog!" "So what? it is just a chicken."