You walk outside and there's a basketball-sized mass of bees hanging from your fence post. Or a branch. Or your mailbox. The instinct to panic is understandable — but stop. What you're looking at is one of the most docile and fascinating events in a bee colony's life cycle, and it's almost never an emergency.
Here's what's actually happening, what to do, and how we can help.
What Is a Bee Swarm?
Swarming is how honeybee colonies reproduce. When a hive gets too crowded, the old queen leaves with roughly half the colony's workers to find a new home. The swarm clusters in one place — a tree branch, a fence, an eave — while scout bees fan out to evaluate potential cavities. This rest stop typically lasts anywhere from a few hours to a few days.
During this phase, the bees have no home to defend and no brood to protect. They are carrying honey for their journey and focused entirely on finding a new location. Swarming bees are extraordinarily gentle — beekeepers regularly collect swarms with bare hands. This is not the time to be afraid.
Swarm season in Sacramento runs roughly March through June, with peak activity in April and May. If you see a swarm during this window, it's a normal natural event.
What Should You Do When You Find a Swarm?
1. Stay calm and keep distance
A 10-foot clearance is more than enough. You can watch from a window. Warn neighbors and keep pets and children away from the immediate area, not because the bees are dangerous but because sudden movements and vibration near a swarm can alarm them unnecessarily.
2. Do not spray them
This is the most important thing. Spraying a swarm with water, pesticide, or anything else will alarm the bees and can trigger defensiveness in a colony that would otherwise have remained calm. It also kills bees that could be rehomed. Put down the hose.
3. Do not call an exterminator
Exterminators kill bees. A colony of 10,000 to 30,000 bees is worth saving, not destroying. Extermination also typically costs $150 to $500+. Our removal is free, we arrive within 24 hours in most cases, and the bees go to a partner apiary where they contribute to a living colony.
4. Report the swarm to us
Use our online report form at thebeeconservatory.com/report. We'll ask for your address, approximate swarm size, and where it's located (ground level, high up in a tree, inside a structure). We confirm within a few hours and dispatch a collection team.
5. If the swarm moves on before we arrive, that's fine
Swarms sometimes relocate on their own as scout bees reach a consensus on a new cavity. If the swarm disappears on its own, the bees have found a new home. No action needed. Just let us know and we'll close out the request.
When Is It Actually an Emergency?
Most swarm situations are not emergencies. A few situations are worth treating differently.
- Someone has been stung and is showing signs of anaphylaxis (throat tightening, difficulty breathing, dizziness) — call 911 immediately.
- The bees are Africanized. Africanized honeybees look identical to European honeybees but respond much more aggressively to disturbance. They're relatively uncommon in Sacramento proper but do occur in surrounding rural areas. Signs: bees are pursuing people or animals more than 50 feet from the swarm, or responding to vibration from lawn equipment nearby. In this case, stay well back and call us.
- The swarm has entered a wall void or structure and been there more than 72 hours. At that point they may be building comb and the situation moves from swarm collection to structural removal, which is more involved.
What Happens to Bees After They Are Collected?
Our field team arrives with a collection box, typically a nucleus hive box or a simple cardboard nuc. For accessible swarms, collection takes 10 to 20 minutes. We position the box below the cluster, give the branch a firm shake, and the bees — including the queen — fall into the box. Remaining bees fly in on their own within a few minutes, following the queen's pheromones.
The box is then transported to one of our partner apiaries, where the colony is established in a full-size hive. A healthy swarm caught in April or May has the full season to build up population and stores. Most become strong, productive colonies within eight weeks.
“A collected swarm is one of the best starts a new colony can have. They're healthy, motivated, and carrying everything they need. We just give them a box to build in.”
Frequently Asked Questions
Are the bees going to come back after you remove them?
If it's a free-hanging swarm with no established comb, no. Once the queen is removed, the remaining bees follow. You may see a few scouts return to the spot over the next 24 hours, but without the queen they disperse within a day.
What if they're inside my wall?
Wall void colonies require a different approach and may involve opening the structure. Contact us with details and photos if possible. We can assess whether a live removal is feasible or whether a pest control referral makes more sense for the situation.
Can I watch the collection?
Yes. We're happy to have property owners watch from a safe distance. Many people find it genuinely fascinating. We can explain what we're doing as we work.
Ready to report a swarm? Fill out the short form and we'll respond within a few hours. We dispatch within 24 hours for active swarms.
Report a Swarm