Unfortunately the friendliest roos often "turn mean." I've found with all my roosters that the friendliness sometimes means they think they are dominant over you. Luckily I've been able to rehome/process/or sell my extra roosters. At this point I need to give away a Barnevelder cockerel. He's matured to the point where he makes the lead rooster angry. I had him listed for sale, but he'll need a home sooner. I might switch out my Brabanter rooster too.I thought the fluffy yellow chick in that bin was so cute last year, I took HIM home too (without realizing it was a him). Sadly 'Nugget' turned aggressive last fall at about 7 months old, he started by attacking the kids smallest to largest. Up until then he was a very nice rooster, we handled him frequently, he was the favorite. He attacked me when I went into the run to feed them a few weeks ago. He is headed to a good home, in a friends stew pot, next week.