Bee pollen is the pollen ball that has been packed by worker honeybees into pellets. Bee bread is also the bee pollen with added honey and bee secretions and stored in brood cells, chambers of honeybees or of wood and mud created by female ground-nesting (such as the Leafcutting Bee) bees. With the Leafcutting Bee, when the pollen ball is complete, a single female lays an egg on top of the pollen ball, and seals the brood cell. Pollen balls are harvested as food for humans. Bee pollen is sometimes referred to as ambrosia.Where as with Honeybees, the thing to keep in mind is that the forager bees that gather pollen do not eat it themselves, since when they transition to foraging, they stop producing the proteolytic enzymes necessary to digest it. So the foragers unload the pollen they’ve gathered directly into open cells located at the interface between the brood and stored honey, creating a typical band of what is called beebread – the substance which is the main food source for honey bee larvae and workers.Foraging bees bring pollen back to the hive, where they pass it off to other worker bees, who pack the pollen into cells with their heads. During collection and possibly packing, the pollen is mixed with nectar and bee salivary secretions. Bee pollen is the primary source of protein for the hive.This method of packing can be seen in the bee species Xylocopa sulcatipes and Xylocopa varipuncta.