A worker bee is any female (eusocial) bee that lacks the full reproductive capacity of the colony's queen bee; under most circumstances, this is correlated to an increase in certain non-reproductive activities relative to a queen, as well. Worker bees occur in many bumble bee Bombus species other than honey bees, but this is by far the most familiar colloquial use of the term. Workers gather pollen into the pollen baskets on their back legs and carry it back to the hive where it is used as food.