This probably explains it. You are talking to him like a rooster would through your body language. Using pressure and release to get what you want with the least pressure.I’d hardly count on me being the “dominant” one, although I have tried and tried to implement a “keep to yourself” mentality. I do have a very firm yet soft demeanor from dealing with so many horses. I feel like my timing is pretty good to release any pressure when I get what I want. I’ve noticed that a quick release when I get what I’m looking for builds a lot of respect from chickens just like it does in horses. It must be that they’re both prey animals.
I'm sure that chickens, like horses, have a situation where the most dominant doesn't actually fight anyone (except maybe the 2nd place guy) once he gets top place, there is hardly ever a situation where the top guy picks on the 3rd or 4th in line but most of the bickering happens between animals that are next to each other in rank (1st and 2nd, 2nd and 3rd, etc) as they all try to move a rung up.
With you acting sure of yourself but not acting like you are worried that someone will knock you off the top spot, that puts you VERY firmly in the top spot, and if there is a cockeral that is above him but below you, well, that puts him WAY at the bottom in his mind.