Beehive entrance discs are typically designed to be attached to the entrance of a beehive box. By rotating the disc, a beekeeper can adjust the size of the hive entrance to serve several purposes:
Fully open: Allows all bees to enter and exit the hive freely.
Queen excluder: Provides a smaller opening that allows worker bees to pass through but keeps larger bees like the queen and drones inside the hive.
Ventilation: A setting with small holes allows for air circulation while keeping the bees contained. This is useful for preventing the hive from getting too humid in summer or for moving the hive.
Fully closed: Seals the hive completely, which is helpful for transporting the hive or protecting the colony from nearby pesticide spraying or animal attacks.