This afternoon I rounded up my older Roo's. (They are headed for freezer camp tomorrow ) There was one that was giving me trouble and I was chasing him around and around the coop, While I was doing that one of my young RIR roo's was following me. I finially cornered him under one of the roosts and was trying to get my hands on him when my little roo ( half the size of the white rock roo ) zips out from between my feet and grabs the big guy by the neck and pins him to the floor.... He held him there till I could grab the big guy and let go as soon as I said " Good Boy, Thanks! " This little guy than struted around the coop ( and I mean struted with his chest out purring ) and than came back to me to sit on my feet to be patted and praised. He never even put a mark on the big guy, but he had him right around the neck , and slamed him face first to the floor. What a smart little roo.