I will say that my mature OEG bantams in the side pasture don't make much noise at all. The roo wakes up and starts crowing around 6:45 every morning, and then crows every night when the sun is going down. Other than that, he doesn't make any noise at all unless there's something he doesn't like too close to the pasture fencing, or unless it's getting ready to rain. I did catch my Jersey Giant roo, Frisch's, attempting to crow yesterday - he sounded like an antique car horn!