While this is a story of a Mille Fleur Cochin roo, I imagine that it could be applied to a roo of any breed. In our MFC pen, I had 3 young roos and 8 hens. The dominant roo has fabulous coloring and type considering he is a project bird. Recently I began allowing them out of their pen to free range. Within an hour of being released, Roo Hefner (as my son calls him) turned into a tiny terror and had attacked both myself and my daughter and later that evening, my son and husband. Fortunately he can only lift his little self off the ground about 4 inches and with fully feathered legs, his spurs are nearly harmless. This behavior continued for several days even after being carried around in a rather undignified manner, given a smack down with several garden implements and a few other creative (yet harmless) punishments. By now my daughter will no longer go to the barn by herself which is very inconvenient for all of us since the chickens are mainly her project. After one extremely annoying attack, I threatened to drop him in with my 2 very very large Coronation Sussex roosters. But alas, I remembered that he contains my best project bird genetics and I need him alive. *sigh* But....why not drop him in my layer pen that is closely guarded by a bantam faverolle rooster of great experience. I should mention that my layers are standard size birds...RIR, EE's, Marans and some other odds and end birds. SHAZAM!! In he goes. Upon hitting the ground running, he had a brief glimmer of 15 fabulous hens all there for the taking. Until Black Bart stepped out of the shadows. A mere 2 minutes later, Roo Hefner was a quivering mass of panting feathers. No blood shed, no injury. Just a short lesson for Roo Hefner on his place in the world. He has now been in the layer pen with the girls and Bart for about a week. He still hasnt quite lost that glint in his eye when I walk in the pen but Bart stands for no antics. Any quick movement from Hef and Bart is on him like white on rice. Hef will be staying in the pen until he loses that glimmer of hope that he will be the King of Barnyard. So the next time you find yourself with a Roo you can not tame or break, considering turning him over to his own kind for a short lesson on manners in the yard.