At the moment I have a small farm with around 60-80 chickens. I have recently decided to only raise standard sized chickens due to my silkie flock being wiped out by a predator. I had a few bantams left I am in the process of selling and one is a blue millie flure d'uccle rooster and his millie flure mate. These were actually my friends chickens that she was keeping at my house due to her parents not wanting "pesky animals" on their property. She loves chickens like I do and I was trying to find a way for her to keep her breeding pair since it was just two little chickens. My fear was the millie rooster being killed by one of my standard roosters. Nothing had ever happened before but I wanted to be safe rather than sorry. So, I put him in my aviary where I have a trio of lady amhersts and 4 coturnix quail. I thought this would be perfect because no predators were able to get to them and they were with peaceful birds around their own size. Well this is where I start having problems.... I am away at school at the moment so I am telling my parents where to put animals and asking how they are doing. A month had passed since adding them to the aviary and I thought since nothing has happened they should be fine. Well, a few days later I get a call from my mother saying how this little millie had nearly killed one of my female pheasants. I was shocked that he would be so aggressive out of the blue after over a month being in the enclosure. She then continues saying how the rooster would grab the quail and shake them like a dog and throw them across the pen. My mother and myself were in shock of what this rooster had done. He had lived peacefully for years with silkies, millies, and other bantams of both sexes. Of course there was the occasional boy he didn't get along with but he was generally a peaceful guy who took care of his hens and minded his own business. My mother immediatley took him out of the aviary and put him in my "bacholer pad" where I am keeping 2 golden laced wyandottes and 2 giant blue orpington roosters. The other roosters were peaceful and we thought he would mind his own business and calm down. Well more excitement happened! He tried to kill one of my orpington roosters and nearly broke his wing! The orpington is at least 10lbs and this bantam is a 1lb maybe. Mind you the orpington was trying to get away from the millie and didn't want to fight. I was flored! I couldn't believe this little rooster was going around trying to kill my birds! I had never had such aggression even in my standard birds! have occasional skuffles but blood was rarely ever drawn. Has anyone ever had this problem before???