In a tree bumblebee hive, the queen emerges from hibernation in the spring and builds her colony from scratch. She finds a site for her nest, lays eggs and forages for pollen to feed her offspring.
Eventually, her eggs hatch into workers who take over foraging duties, Brock noted, allowing the queen to stay in the nest and devote her time to laying eggs — including the next generation of queen and mates.
Like any other monarchy, only the offspring of royals can inherit the throne. However, that doesn’t stop worker bees from laying eggs in hopes that their offspring could one day take control of the hive. In some cases, bumblebees will even execute the queen to help their kids get ahead.