How can I effectively shut up a neighbor's rooster?

To effectively quiet a neighbor's rooster, you can try talking to your neighbor about the noise issue and see if they can keep the rooster indoors during early morning hours. You can also consider using soundproofing methods like installing soundproofing panels or using white noise machines to minimize the noise. Additionally, contacting local authorities or animal control may be an option if the noise becomes a persistent disturbance.