Swarming
Also known as: Swarm, Bee swarm
A swarm, or swarming, is the natural way a honey bee colony reproduces: the old queen leaves the hive with part of the workers to found a new colony.
A swarm, or swarming, is the natural way a honey bee colony reproduces: the old queen leaves the hive with part of the workers to found a new colony. According to MSU Extension, it is an instinct that doubles a colony's chances of survival. For a beekeeper, swarming is the biggest challenge in spring.
The primary swarm consists of the old queen, a few drones and 50–60 % of the workers. A swarm leaves in fine weather between 10 am and 2 pm and settles on a branch, post or building: for a few minutes to several days, until scout bees choose a new cavity.
The causes are congestion in the nest, a weakening queen-substance signal in a large colony, a queen older than a year, weather, poor ventilation and heredity. The first sign is queen cells in the nest; once a queen cell is capped, the bees are committed to swarming. In spring a colony also rears more drones: the highest number of mature drones coincides with swarming (Schaumann et al., 2024).
Why this matters to you. Swarming is natural reproduction, but for a beekeeper it means a lost crop: a colony that has swarmed rarely has a foraging force large enough for a marketable honey harvest (MSU).
Facts
| Season | In spring, when the colony grows fast |
|---|---|
| Duration | A swarm leaves in fine weather between 10 am and 2 pm |
| House range | Primary swarm: old queen, a few drones, 50–60 % of the workers |
| Main use | Reproduction of the colony as a whole |
How it connects to Honey & beekeeping
Links
- Part of
- 🐝 Bees
- Similar and different
- Honey bee colony life cycle
Frequently asked questions
What is swarming?
The natural reproduction of a colony: the old queen leaves the hive with part of the workers to found a new colony.
Who goes with a primary swarm?
The old queen, a few drones and 50–60 % of the workers.
Is it true that cutting out queen cells is enough to prevent swarming?
No: cutting queen cells only delays it, because the bees build new ones within days; once a queen cell is capped, swarming is committed.
When does a swarm leave the hive?
In fine weather between 10 am and 2 pm; it settles on a branch, post or building until scout bees find a new cavity.
What causes swarming?
Crowding in the nest, a weakening queen-substance signal, a queen older than a year, weather, poor ventilation and heredity.
Similar
Queen bee · Drone bee · Buckfast bee · Worker bee · Carniolan honey bee · Italian honey bee
Sources
- Mississippi State University Extension: Colony Growth and Seasonal Management of Honey Bees
- Penn State Extension: An Introduction to Queen Honey Bee Development (Anton, Grozinger, 2025)
- Schaumann et al. (2024) PLOS ONE: native and hybrid (Buckfast) honeybee drones in Sweden