If you're looking to stop a Silkie rooster from crowing, there are a few things you can try. First, you can try to train the rooster not to crow. This can be done by making a loud noise every time the rooster crows, which will eventually teach the rooster that crowing leads to an unpleasant noise. You can also try to keep the rooster's environment quiet, as loud noises can trigger crowing. Finally, you can try to give the rooster less food, as a full stomach can lead to increased crowing.