I've been reading with interest several posts regarding aggressive roosters. I have 37 chickens, 2 being roosters. I've owned chickens for years, but this is my first experience with roosters. They are going on 10 months and I have not seen any indication that they are becoming aggressive. Is there an age on onset where you can see if a rooster will become aggressive? When my chickens see me they always follow me and sometimes I get a bit nervous because the boys are always in the front directly behind me. I have turned around and started to chasing them or hovered over them making low growly noises (okay... you can stop laughing now), and they seem to be a little bit leary of me (maybe they just think I'm nuts), but I still wonder if I should be concerned.