We have an aggressive rooster, Brooks. Here are some of the things that are making him friendlier and even able to hold when we couldn't hold him even before he became aggressive! 1. Start simple. Carry a racket around with you in your run or ranging area. We first just held the racket over his head. (We use a badminton racket) 2. If he still is aggressive, chase him around your run or ranging area carrying the racket 3. If he still isn't responding to the fact that you are his boss, lightly hit him with the racket. But hard enough so he won't get mad and charge back at you. 4. After that, the next time he charges hit him with your racket and kick him. 5. Some other weapons we use are brooms and umbrellas. Those do make your hens more skittish though, so if you don't want that happening, just stick to the racket. 6. One reason we found that roosters become aggressive is because they want treats. So we started to whistle every time the chickens were getting treats so he wouldn't attack us for them. We also fed them the treats in the exact same spot. 7. This is the most important one!! DO NOT ACT SCARED OF THE ROOSTER! Don't back away from him at all! He will think you are scared and think he is your boss, and he will continue to get more aggressive. I hope this helped!