My parents raised chickens when I was a kid and we had two roosters, General Custer and Rebel. Rebel was a very chilled out rooster and he would actually let you pet him. General Custer, however, was a true bastard. If he saw you anywhere near his hens, he'd instantly attack. We used to have a game to see how close we could get to a hen before he saw us, but you had to run like hell because he was REALLY FAST and REALLY MEAN!