I'm outside with the chicks just now and hear one scream. I look and see my little Cindy Lou Who being held by the back of her neck by one of my Big Beefies (Barred Rock) and he's (got to be a he) doing the motions (you know what I mean). They're only 4 weeks old. Do roos start their rooing this early? If so, when are they actually sexually mature and capable of fertilizing a mature female? In other words, do they mature faster? If so, at what age could I turn them out to my older girls so they'll leave my babies alone? It was horrible. I wanted to slap him. He was so rough. I call her Cindy Lou Who, the Littlest Who, who was only two because she's the tiniest - the last to hatch and I wasn't sure she would make it she was so small. She's a blue Ameracauna. Having never had a roo - this was a real eye opener. I think every one of the Big Beefies, all six, may be a roo so what am I going to do? Think I need to go back to feed store and buy six BR pullets that just arrived so at least there will be some females.