So I have a young bantam rooster thats only been crowing for the past couple of months. Never had a problem with him or my other bantams with aggression. A few days ago I had a friend go by the yard and throw some scratch out for the chickens since I was gone. The friend happens to be biracial and the rooster attacked her while she had her back turned. He continued to be aggressive towards her and chased her all the way across the yard to the house. Then today I had some workers around the farm and the rooster attacked the only black person in the group and left the 3 white guys alone. What is causing him to do this??? I have never heard of chickens doing this.