The signals inside a colony
The waggle dance is the famous one and it is not the important one. A colony runs on a repertoire of vibratory pulses, brief contacts and chemical messages, several of which do more work in an ordinary day than the dance does in a season.
The vibratory repertoire
| Signal | What it is | What it does |
|---|---|---|
| Tremble dance | A slow trembling walk with the body rocking | Recruits more nectar receivers when foragers are returning faster than they can be unloaded |
| Stop signal | A brief vibratory pulse delivered by butting a dancer | Inhibits recruitment to a site — used for danger, and between rival scouts during nest choice |
| Shaking signal | A rapid vertical shake while gripping another bee | Raises general activity and readiness to work, with no single specific meaning established |
| Queen piping | Tooting by an emerged queen, quacking by queens still in cells | A dialogue that regulates when rival queens emerge |
| Worker piping | A rising tone produced against the comb | In a settled swarm, signals that departure is imminent and workers should warm up flight muscles |
The stop signal is the most interesting of these. It was long assumed to be a request for food. It is now understood as a negative feedback message: a bee that has met danger at a site will butt dancers advertising it, and the same signal is exchanged between scouts advocating competing nest sites. That cross-inhibition is what lets a swarm break a deadlock between two good cavities rather than splitting.
Trophallaxis
Bees pass liquid mouth to mouth, constantly. It distributes food, and it distributes information: pheromones, including queen substance, circulate through the colony this way, and so do the odours of what is currently being collected. Automated tracking of marked bees has mapped the resulting network, and it is dense enough that a substance introduced to one individual reaches a large share of the colony within hours.
It is the reason a colony behaves as a connected system. There is no broadcast channel in a beehive; there is a very large number of brief pairwise exchanges.
The chemical channel
- Queen mandibular pheromone: a multi-component blend that suppresses worker ovary development, inhibits the rearing of new queens, and holds a swarm together in flight. Its absence is detected within hours and triggers emergency queen rearing.
- Brood pheromone: released by larvae, and it shifts worker behaviour and foraging effort. The brood is an active participant in colony regulation rather than a passive load.
- Sting alarm pheromone: released when a bee stings, marking the target and recruiting defenders. Its principal component smells of banana, which is why beekeepers avoid bringing one to an apiary.
- Mandibular alarm pheromone: a second, shorter-range alarm compound released by biting.
- Nasonov pheromone: fanned from a gland at the tip of the abdomen at a nest entrance, at a water source and at a settling swarm. It means here, and bees adopt a characteristic stance to broadcast it.
- Footprint pheromone: deposited as bees walk, and used to mark recently visited flowers so foragers do not waste time revisiting an emptied one.
How this adds up to a decision
None of these signals is a command and none is addressed to the colony as a whole. Each shifts the probability that a particular bee does a particular thing. Colony-level outcomes — allocating foragers between patches, choosing a nest site, ventilating, defending — emerge from many individuals with different thresholds responding to local information.
That is worth stating plainly, because the shorthand of a hive mind hides exactly the mechanism that makes it interesting. Nobody is deciding. The decision is what the arithmetic of thousands of thresholds produces.
Every signal, with its limits
Two corrections to the textbook picture are now well supported. The 'round dance' for nearby food is not a separate language: dances for near sources also contain waggle runs, and the forms grade into one another. And not every signal directs a task. The vibration or shaking signal, in which one worker grips another and vibrates her body, raises the receiver's general activity in whatever she is about to do.
Signals also have to be learned. Young bees that could not follow dancers before their first dance made larger angle errors, which improved with experience, and encoded distance wrongly for the rest of their lives.
| Signal | Sender | Context | What receivers do | Limits |
|---|---|---|---|---|
| Waggle dance | A forager or scout returning from a rewarding site | Food, water, resin or, in a swarm, a nest site | Followers attend the dance and some leave to search. The angle of the waggle run to vertical stands for the bearing relative to the sun; its duration grows with the distance flown, which bees judge from optic flow. | Recruits often need several trips and searching to find the site, and correct dancing itself is partly learned from other dancers. |
| 'Round dance' | A forager returning from a site near the nest | Food close to the hive | Followers are recruited to search near the nest. The classical split into a separate round dance and waggle dance is no longer held: dances for near food also contain waggle runs and the forms grade into one another. | Treat it as the short end of the waggle dance, not a second language. |
| Tremble dance | A nectar forager that waits a long time to find a bee to unload to | More nectar arriving than receivers can process | More bees take up receiving nectar; dancing for further foragers is damped. | Unloading delay explains only part of natural tremble dancing; the signal's full set of triggers is unresolved. |
| Stop signal | A worker that butts a dancer and emits a brief vibration | A dancer advertising a site where the sender met danger or crowding; in a swarm, a scout dancing for a rival nest site | The dancer tends to stop. In swarms the same signal between rival scouts damps support for competing sites and helps break a deadlock. | An inhibitory signal whose effect depends on context — not a vote and not a general request for food. |
| Vibration ('shaking') signal | A worker that grips another bee and vibrates her body | Many: from foraging peaks to queen rearing and swarming | The receiver becomes more active in whatever she is doing or is about to do. | Modulates activity generally rather than directing a particular task. |
| Food exchange (trophallaxis) | Any adult, to another adult, the queen or drones | Distributing nectar and glandular secretions through the colony | Food passes mouth to mouth and with it chemical information about what is being collected and about the colony's state. | Gut bacteria are acquired mainly from contact with nurses and their faeces; food sharing alone produced atypical communities in experiments, so trophallaxis is not the route for the microbiome. |
| Queen mandibular pheromone | The queen, spread by workers that contact her | Continuously, while a laying queen is present | Workers are attracted to the queen, queen rearing is inhibited and worker ovary development suppressed — together with other queen and brood signals. | A blend acting alongside other pheromones and colony conditions; no single chemical runs the colony. |
| Brood pheromone | Larvae | Throughout brood rearing | Nurse feeding and the balance between nursing and foraging shift with the amount of brood. | One input among several that set how the colony allocates its workers. |
| Alarm pheromone | A guard or a stinging worker, from the sting chamber | Disturbance at the nest | More workers become defensive and are drawn to the marked target. | The response depends on the colony's state, weather and genetics as well as the pheromone. |
| Nasonov pheromone | Workers exposing a gland at the tip of the abdomen and fanning | At the entrance, at water and when a swarm settles | Other workers orient towards the source. | An orientation signal whose effect depends on what else the bees can perceive. |
A signal is described by the response it is observed to produce, not by a purpose; the colony's behaviour emerges from many signals and conditions at once.
Checked 2026-10-31 against: The Dance Language and Orientation of Bees (Harvard University Press, 1967); Honeybee navigation: nature and calibration of the 'odometer' (Science, 2000); Social signal learning of the waggle dance in honey bees (Science 379:1015–1018 (Dong, Lin, Nieh and Tan), 2023); Do honeybees have two discrete dances to advertise food sources? (Animal Behaviour 75(4):1291–1300 (Gardner, Seeley and Calderone), 2008); The tremble dance of the honey bee: message and meanings (Behavioral Ecology and Sociobiology, 1992); A negative feedback signal that is triggered by peril curbs honey bee recruitment (Current Biology, 2010); Stop signals provide cross inhibition in collective decision-making by honeybee swarms (Science, 2012); The vibration signal, modulatory communication and the organization of labor in honey bees, Apis mellifera (Apidologie 35(2):117–131 (Schneider and Lewis), 2004); Trophallactic interactions in the adult honeybee (Apis mellifera L.) (Apidologie 29:97–112 (Crailsheim), 1998); Routes of acquisition of the gut microbiota of the honey bee Apis mellifera (Applied and Environmental Microbiology, 2014); Pheromone communication in the honeybee (Apis mellifera L.) (Journal of Chemical Ecology, 2005).
Sources
- Do honeybees have two discrete dances to advertise food sources? — Animal Behaviour 75(4):1291–1300 (Gardner, Seeley and Calderone) (2008) · Peer-reviewed article Link
- The vibration signal, modulatory communication and the organization of labor in honey bees, Apis mellifera — Apidologie 35(2):117–131 (Schneider and Lewis) (2004) · Peer-reviewed article Link
- Social signal learning of the waggle dance in honey bees — Science 379:1015–1018 (Dong, Lin, Nieh and Tan) (2023) · Peer-reviewed article Link
- Trophallactic interactions in the adult honeybee (Apis mellifera L.) — Apidologie 29:97–112 (Crailsheim) (1998) · Peer-reviewed article Link
- Routes of acquisition of the gut microbiota of the honey bee Apis mellifera — Applied and Environmental Microbiology (2014) · Peer-reviewed article Link
- A negative feedback signal that is triggered by peril curbs honey bee recruitment — Current Biology (2010) · Peer-reviewed article
- Stop signals provide cross inhibition in collective decision-making by honeybee swarms — Science (2012) · Peer-reviewed article
- Pheromone communication in the honeybee (Apis mellifera L.) — Journal of Chemical Ecology (2005) · Peer-reviewed article
- Pheromones of Social Bees — Chapman and Hall (1987) · Monograph
- The Biology of the Honey Bee — Harvard University Press (1987) · Textbook
- HoneyHQ editorial synthesis — HEKNO Ltd · HoneyHQ synthesis
- The Dance Language and Orientation of Bees — Harvard University Press (1967) · Monograph
- Honeybee Democracy — Princeton University Press (2010) · Monograph
How sources are selected and weighted is set out in the sources and evidence policy.
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