Now that makes a lot more sense!So I called the farm back this morning and the guy said he meant crowing.
He is definitely the most obvious of the lot.Ironically, I looked up what a young cockerel sounds when they are crowing and right after I played the sound this guy (see picture) immediately started crowing.
I also noticed that he is the only one with an “extra” wattle. I don’t know if that is a significant observation to the topic.
Also this morning, I noticed that he is more assertive than the rest of the Buffs.
I'm not sure what you mean by an "extra" wattle. Each chicken should have two wattles (left and right), dangling under their chin. He also has large red earlobes (should be one on each side of his head). They are more obvious on him because he is developing more quickly, but should eventually show up on all the other males, and a few months later on any females.
Being assertive is partly a matter of individual temperament, but it's partly a matter of how quickly the bird is developing. In general, the male that matures fastest will be the most assertive, at least for a while. Once the others catch up, a different one may take over as most assertive.
Since you are not allowed to have roosters, I'm guessing you will take this one back to the farm, and when another one starts crowing you will take him back, continuing until you run out of males and finally have just pullets.