Swarms!
(Mainly for non-beekeepers)

Help!!!  What is a swarm?  Why do bees swarm?  Contact telephone numbers

The Stratford-upon-Avon & District Beekeepers' Association maintains a list of beekeepers who are willing to collect swarms or assist the public with bee related problems.  Contact telephone numbers are supplied to the police and to Environmental Health Departments.  This service is normally provided free of charge, except where the bees are particularly difficult to remove or there is considerable travel involved.  Advice is always free and we would urge members of the public to talk to us rather than to contact pest control companies - bees are not pests!

Help!!!

Firstly, remember Corporal Jones and 'Don't panic!'

Next, can we take just a moment to check that you do indeed have a swarm of bees?  Every year we get well over a hundred calls from the public asking for assistance with swarms - but many are not swarms and many are not honeybees!  Please look at the pictures below.

Note that we are willing to deal with swarms of bees and to give advice on bumblebees and 'solitary' bees.

We do not deal with wasps' nests - for these you should contact the Environmental Health Department of your local council.

A swarm of bees hanging from a branch.
We can deal with this easily.

This swarm decided to set up home in a tree and has built some combs.  It will be more difficult to remove.

A wasps' nest in a tree - note that these outdoor nesting species can be very dangerous.

     

A typical wasps' nest with wasps on the outside.  Wasps are always striped black and yellow with smooth, hairless bodies.  They are roughly the same size as a honeybee but the bee is hairy.

A huge wasps' nest in a loft - dealing with this is a job for the professionals! The Median wasp (centre), sometimes known as the Euro wasp, nests outdoors (see above).  It is much larger  and darker than the common wasps and is sometimes called the 'Little Hornet'.  Compare its size with the housefly (top) and honeybee (below).
     
A queen hornet on a nest that it had started to build in a beehive!  Hornets are our largest species of wasp.  The red colour distinguishes it from other wasps.  Contrary to common belief, they are not particularly aggressive - but they do have a powerful sting! There are many species of  'solitary' bee.  They nest in holes in the ground, plant stems and holes in soft mortar.  They are called 'solitary' because they do not make a communal nest - although many may nest in the same area.  They do not sting and do a great deal of good work pollinating flowers.  Enjoy watching them!
(See next picture).
Male (left) and female (right) solitary bees, in this case the Tawny Mining Bee (Andrena fulva).  This bee is very common in our area and is seen here working plum blossom.
The nest of another 'solitary' bee - the Red Mason Bee.  The cell walls are made from mud.  Note all the yellow pollen. Bumblebees often make their nests in bird boxes - but in this case a small swarm of honeybees has moved in.  The box will be far too small for them as the colony grows. Queen bumblebee on a crocus; she is covered in pollen grains after gathering nectar.  Bumblebees vary in size from the large queens to early workers no bigger than a fly.  All species are very 'furry', but have varying colour patterns - black, brown, yellow, red, buff and white.

More information on Bumblebees, Solitary Bees, Wasps and Hornets can be found by following links from our Links page.

If you are sure that you have honeybees, here is what you should do:

What you should NOT do:

Contacts:

Association Swarm Liaison Officer: Moira Osborne: 01789 731745.
Moira is able to offer advice and has a list of beekeepers in the area who are willing to help with swarms.

Warwickshire Police Headquarters at Leek Wootton: 01926 415000.  (There is no need to dial 999!)

Stratford-upon-Avon Environmental Health Department: 01789 260831.

What is a swarm?

A swarm is a part or, in some cases, all of a colony of bees that has left its home - either a hive or perhaps a hollow tree.

When a swarm first issues from a colony, it will usually fly around for a short while and then settle, possibly on the branch of a tree.  The swarm will then send scouts to find a new home and then, when they have found one, will move to it.  A swarm may hang up for just a few minutes or for several days, but when it moves off it will be gone in a couple of minutes.

A large swarm will make a considerable amount of noise as it is flying around and can be quite a frightening sight to the non-beekeeper.  However, most swarms are very docile and will not sting even if you stand right in the middle of them - provided that you do not attempt to impersonate a windmill!

Why do bees swarm?

It would be difficult to explain swarming completely here, but the following gives a reasonable overview:

Bees normally swarm for one of three reasons:

Reproduction

Colonies of bees sometimes die during the winter - they may starve if they were unable to gather sufficient food during the previous year, or they may be attacked by pests such as mice or woodpeckers, or the queen may have failed - and must therefore reproduce.  If they did not, then eventually there would be no bees.

Individual bees cannot survive alone, so the colony, which functions as a unit, must split in order to reproduce.  It does this by first producing new queens (because every colony must have a queen - they lay all of the eggs that produce the workers and drones) and if the colony is to split then it will need at least one new queen.  When the first new queen cell has been finished and sealed, approximately half the bees leave the hive with the old queen to set up a new colony.  This is the typical 'prime swarm' that we will usually see in this area during May.

Mating

When the new queen emerges from her cell she must then mate with up to ten drones.  She mates on the wing and usually does this around the fourth day after emerging from her cell; of course, the weather will affect when she flies.

Usually queens fly out alone on their nuptial flights, but sometimes a swarm will issue with them.  These are known as mating swarms.  These swarms normally return to the colony with the queen, but sometimes they may fly away and leave the colony for the next queen to emerge.  She may then take-over the colony - or may also fly off with an even smaller swarm - and so on…

These small swarms are known as 'casts'.

Absconding

Sometimes bees will abscond from the nest site because of unfavourable conditions.  This happens rarely in this country.

 


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