I don't understand it. When I had the chickens all on my front porch, all four would crow. I only have one left (the least aggressive of the four) and he has not crowed since I moved them out to the new coop! For those of you that follow my posts, you know that I had to give away the dominant rooster this last Sunday. He was attacking the other one. He seems to be leading the flock, but still no crowing. I don't understand it!