Honeybees choose new nest sites by essentially head-butting each other into a consensus, shows a new study.
When scout bees find a new potential home, they do a waggle dance to broadcast to other scout bees where the nest is and how suitable it is for the swarm. The nest with the most support in the end becomes the swarm’s new home.
But new research shows another layer of complexity to the decision-making process: The bees deliver "stop signals" via head butts to scouts favoring a different site. With enough head butts, a scout bee will stop its dance, decreasing the apparent support for that particular nest.
This process of excitation (waggle dances) and inhibition (head butts) in the bee swarm parallels how a complex brain makes decisions using neurons, the researchers say.
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