How old are roosters when they start to show aggressive behavior? And if they are going to be aggressive will it show by then or will they one day a year later just decide to be a jerk? I'm just wondering. My Pigpen is 6 months old and he's never shown any aggression yet. (except the foot pecking but he's not being aggressive about it-just a peck then he looks at me like "I'm sorry was that your foot?" and goes about his business) Thanks!