I have a mixed flock of about 20 chicks, 8 weeks old. It's looking like 6-8 of them are boys. I would enjoy having one roo, but I have had negative experiences with mean roos in the past. These boys are polish, silkies, and cochins. Are any of those breeds nicer, more docile than the other? Should I keep them in a separate pen? Looking for any suggestions on how to be a good roo owner.