I have had chickens in the past - sometimes with no near neighbors so that the number of roosters was only limited by my ability to feed them and handle the early morning racket. When I had neighbors near enough to possibly be bothered by them, I kept only one rooster and no one complained. Having lived in a neighborhood where a family raised fighting cocks I am very aware of how loud and annoying they can be - especially if a person is not feeling well and is trying to get some sleep. We really should try to be understanding and let our neighbors have some peace. Life is too short. Enjoy your neighbors as friends instead of dreading them as enemies.