When are swarm cells usually created in a beehive?

Swarm cells are typically created when there is an abundance of resources in a beehive. This abundance often manifests in the form of a healthy supply of nectar and pollen, which encourages the colony to increase its population and reproduction. When the hive is thriving, worker bees start to prepare for swarming by creating these specialized cells. The swarm cells are essentially a method for creating new queens, allowing a portion of the hive population to leave with the old queen while the remaining bees continue to live and thrive in the original hive with a new queen. This process is a natural strategy for colony propagation and ensures that the genetics of the hive are spread to new locations.