I bought 4 white crested polish chicks from Atwood's in the spring. It turned out that 3 were roosters. Two blacks and one blue. I have a blue hen as well. They are just beautiful. Recently, out of my 17 chickens, the blue polish rooster has taken over the yard. He bullies even the large Barred Plymouth Rock Rooster. Everyone teases me because he follows me around like a dog. Yesterday, as I was walking across my driveway, he ran up behind me and attacked my leg. He put a cut on my calf. This morning at turn out, he fluff out at me and acted like he was going to attack again but when I walked toward him, he layed down and started clucking, when I walked away, he attacked one of the other roosters and pulled out some of his crest feathers and stood there pecking at the feathers on the ground. I don't understand this change and sudden aggression. He was always a loving little guy. None of the others are aggressive at all. He also crows all day long. All of my chickens are the same age and have just started breeding. The hens haven't started laying yet. They have just reached 4 months old. Any ideas?