Every chicken keeper, novice or more experienced one has had an issue with some aggressive rooster in their flock.
Not every rooster is aggressive but once in a while, some roosters have the tendency to become aggressive even if they are kept in the same flock since they were cockerels.

Shannon Stansberry has been engaged in the business of raising chickens for more than 12 years. In 2016, she accomplished the Agriculture & Natural Resources program at Mt. San Antonio College. At present, she tends to more than 80 chickens on her 4-hectare farm. Shannon regularly shares her insights and experience on how to raise healthy and contented chickens on the platform Typesofchickens.com