Hello, I have a 4 month Buff roo who has always been very nice and passive. He got along great with the other 4 roos and 2 pullets he grew up with. I had to cull the other 4 roos since it was just too much crowing and stressful on the 2 girls (my first experience with chickens, I bought 7 sexed chicks and 5 of them turned out to be roos!!). So he has been the only male with 4 hens (added 2 more) until I just introduced a 2 month old roo and another pullet after letting them see each other for a while. The younger roo is dominant (Black Copper Marans) and the Buff has started to be aggressive and nasty to me and the hens. One of them has to go and since the Buff is abusing the new 2 month old pullet and the older girls I am thinking it has to be him. I HATE culling and was wondering if anyone has any advice? Will his nasty behavior stop? And is it normal for a 5 month old roo to try and mate with a 2 month old? He's 4x her size and she's traumatized. Thanks!!