1. Honey bees

are about the same size as a wasp but are duller in colour – if you see a large cluster of thousands of insects hanging on a branch or fence post this may be a swarm of honey bees. Please note that we do not recover bees from buildings etc. for health and safety reasons and because of the structural damage that may be caused. We will also not destroy honey bee nests – this is a pest control problem – honey bees are not protected, so do not be put off if you are told this. If a Pembrokeshire resident, call Pembrokeshire County Council’s, Customer Contact Centre on 01437 764551 and ask for Pest Control.

2. Wasps

do not swarm. Each year a new nest is built which looks like a paper lantern.  Close to it is easy to distinguish between wasps which are brighter yellow and with a narrower waist than the honey bee.  If insects are flying from a gap in roof tiles near the ridge, it can be tricky. If the nest is visible identification is easy. Please note that we will not deal with wasps or their nests – if a Pembrokeshire resident, call Pembrokeshire County Council’s Customer Contact Centre on 01437 764551 and ask for Pest Control.

3. Bumblebees

do not swarm. Most people can recognise bumblebees they are much bigger and fewer than honey bees with layer of hairs on their bodies which is usually banded black and yellow (or orange or red) and the traffic at the nest entrance will consist of only a few bees a minute, whereas a busy hive will have almost a cloud of bees at the entrance.

If you have bees in your bird box, they are probably the Tree Bumblebee (Bombus Hypnorum) (see picture below), which have come over from the continent in recent years.  They aren’t particularly aggressive, but are likely to defend their nest if they feel threatened.

We will be unable to help you with a bumble bee problem. The bees will disappear over winter and are unlikely to return to the same location so if possible enjoy them for the summer.

4. Solitary bees

do not swarm. Since these bees are quite fussy about where they set up their nests, it is not uncommon for many bees to do so in close proximity, and if the conditions are right a large number of nests can mature almost at the same time. In this case a large number of bees will be seen crawling about. One of the most common is the red mason bee, which can often be seen exploiting holes in brickwork or footpaths for its nesting site. We will be unable to help you with a solitary bee problem. Again, if possible, enjoy them.

If you have looked at the above checklist, think you have a Honey Bee swarm and need advice, please contact:

Swarm Co-ordinator – Jeremy Percy on 07799 698568

N.B. – Due to the COVID-19 emergency, it may not be possible for us to deal with a swarm collection request.

Note also, that we will not deal with bumble bees, wasps or their nests – if a Pembrokeshire resident, we suggest that you call Pembrokeshire County Council’s, Customer Contact Centre on 01437 764551 and ask for Pest Control.

At this time of year we get a lot of queries from members of the public about swarms of bees. One noticeable trend, has been the number of reports concerning bees found in the roof or facias of buildings, bird boxes, etc. This may well be the Tree Bumblebee (Bombus Hypnorum) which is a recent visitor to the UK, but is becoming more common.

Unlike other bumblebees which tend to nest in the ground, the Tree Bumblebee (see picture below) likes to live higher up, typically in bird boxes and roof spaces. In general, they are not aggressive unless disturbed and will naturally disappear later in the summer. Most of the flight activity outside the nest is by the males (Drones) which do not sting and are trying to mate with a virgin queen.

Please note that we do not remove bumble bee or wasp nests. For more information on swarms please click here.

With the warm weather, ample forage and growing colonies, the threat of swarming looms ever larger!

Please ensure that you are inspecting your colonies regularly for swarming activity (e.g. every 5 days for unclipped queens) and do not imagine that by merely cutting out any queen cells you will solve the problem.  You need to take the correct remedial action to avoid losing your queen and half of your bees!!

We therefore recommend that you read the WBKA’s  excellent pamphlet on Swarm Control (click here) and also look at how to create an Artificial Swarm.