How do you group your bucks? I assume there would be a yearling, 2yr, and 3yr old pen... Do you mix some age groups with others to help prevent fighting? When is it safe to move a breeder back in with other bucks? Which bucks would you have sharing a common fence, or should they not share a fence at all? Is shade cloth, or something similar, enough to prevent them from sparring through the fence? I'm sure people have different strategies...just trying to get a sense of what is working good for some of you.