RoseMcEagle
In the Brooder
You can try what was suggested, but don't blame yourself if it just doesn't work. Temperament is heritable and usually, the only way to have a good tempered rooster is to keep only good- tempered roosters and cull the ones who are so stupid that they attack the humans who bring feed and water. Once they are mating the hens, the aggression is hard to change. It easier if it's just biting as a youngster testing boundaries, but once the hormones are in play, it's much harder, and to be honest, nearly impossible, in my experience. I refuse to have to watch my back in any chicken pen because of a mean rooster.
Why put up with a human-aggressive rooster when you can have one like my Isaac, who does his duty to the max, and is completely easygoing and friendly? Check out the video in this post for proof of what a rooster can be like:
https://www.backyardchickens.com/t/384349/sdwd/14610#post_8894682
You may not believe it, but Isaac was not coddled at all as a youngster. His temperament is what it is as you see it because that's just him. He had not met that teenager before that weekend, either. The blue Orp in the avatar is just as friendly and is happy to eat out of your hand any day of the week. He's never bitten or flogged me, but then, who wants a 14 lb rooster hitting them across the back of the legs, right??
I don't require my roosters to be cuddle-bugs, of course, but I do expect them not to bite or flog me, not ever, and certainly not one as large as an Australorp, who could knock me off my feet if he hit me just right. Life's too short.
What breed is Isaac? I'm on my phone so mostly all I saw was a blurb of white and red.