Signs that suggest a swarm
A honey-bee swarm is part of colony reproduction. The group may gather on a branch, fence, shrub, post, or other exposed surface while scout bees search for a new cavity.
- The bees form one visible cluster in the open.
- The cluster appeared suddenly.
- There is little or no repeated traffic into a fixed hole.
- The group may remain for hours or several days before moving.
Signs that suggest an established colony
A colony using a structure or cavity usually produces repeated, directional flight at one or more entrances. Comb, brood, stored honey, and a larger internal population may be hidden from view.
- Bees enter and leave the same opening throughout the day.
- Activity has continued for days, weeks, or longer.
- The entrance is in a wall, roofline, soffit, chimney, tree hollow, or enclosed box.
- Buzzing or bee activity is noticed inside the building.
What to do now
Keep people and pets back, avoid spraying the cluster, and do not plug an active structural entrance. Take photos from a safe distance, note when the activity began, and send the property location to a bee-removal provider.
Common questions
Will a swarm always leave on its own?
A swarm may move after scouts select a nest site, but timing is unpredictable. It may also move into a nearby cavity. An assessment is reasonable when the cluster is near people, pets, an entrance, or a structure.
Why should I not seal the hole?
Sealing an active colony can trap bees, leave comb and honey behind, and cause bees to seek another exit. The colony location and removal plan should be understood before closing entrances.