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| What do you do if you find a bumblebee
nest?
Do you get honey from a bumblebee nest, and if so how
much?
How do bees make
honey?
Can you keep bumblebees the same way as you can
keep hive bees?
What do you
do if you find a bumblebee nest?
Really the best answer to this
question is Do nothing! You can, of course, look forward to enjoying watching
the bees come and go. The farmers who grow tomatoes under glass pay a fortune
for bumblebee nests, yours is free, and at the end of the nesting period you
will have a bumblebee nest to look at and examine. You can try following the
bees to see if they all visit similar shape and colour flowers. In fact you
should consider yourself quite lucky.
However I realise that you
may be looking at these pages because you are worried about where the nest is
located and what might happen. You may not feel lucky after all. Firstly I must
reassure you that bumblebee nests are not like honey bee hives, they last only
a few months, and are usually small enough to hold, and bumblebees are not as
ferocious as wasps. The bees are fairly placid and are unlikely to sting unless
they feel their nest is threatened. So if the nest is under the house or shed
it is best just to leave it. Bumblebees do not damage brickwork or wood.
Some of the bumblebees which
make smaller nests, Bombus pratorum and B. hortorum do sometimes chose strange places to nest.
Their nests are small and in the case of B. pratorum are usually very
short lived. So again, I would say leave the nest alone. If this is impossible,
for example if the nest is under your rotary lawnmower that you forgot to clean
last year, or in the pocket of your gardening jacket that you left in the shed
at the end of last summer. You may feel that you have no choice.
Well you can try to move the
nest to somewhere more suitable, or even better, remove the lawnmower. Read my
section on stings before attempting to move a nest.
Firstly you need a container big enough to hold the nest. Anything fairly
strong will do, a sandwich box, a small biscuit tin, an old teapot. Or you
could make a nest box, almost any weatherproof container will do as long as you
make a hole big enough for the bees to get in and out. If you can get hold of
the book by Sladen, Alford or Prys-Jones, they have
many designs for artificial nests. If the nest is to be placed outside then the
container must be weatherproof, but if you found the nest in a shed than it is
best to leave it in the shed, it wont cause you any bother, and the bees
obviously prefer it.
Next you should try to move
the nest either late in the afternoon or early evening when it is both cooler
and darker. Most of the bees will be in the nest and as it is cooler they will
be less active. Get someone to help you and work quickly. You can gather up as
much of the nest material, grass moss or whatever; alternatively you can
provide clean nesting material that will be free of parasites, dried moss, cut
up pieces of dried grass, felt etc. If you are leaving the nest in more or less
the same position but removing the lawnmower or jacket, then this is all you
really need to do. If you are moving the nest to a different location then you
must be prepared to catch any late returning workers and place them in the new
nest. The workers will return that night or next morning once it has warmed up.
You really do need to collect these workers, the number of food gathering
workers in these nests is quite low and the loss of only a few can mean the
nest will not have enough food to survive. The nest should be placed in a
sheltered south-facing location.
If the bees are the ground
nesting kind things are more difficult. The tunnel to a Bombus terrestris nest can be two metres long. This
calls for quite a lot of digging, and really they are best left alone.
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Can you keep bumblebees the same way as you can keep hive
bees?
Yes you can if you build a suitable nest box, of course they
will not survive the winter. It is not easy though, and I have never got past
the stage where the queen has made her honeypot. Designs for nest boxes can be
found in Sladen, Alford and Pry-Jones's
books.Do you get honey from a bumblebee nest, and if so how
much?
In the UK the biggest nests are built by Bombus terrestris and according to Sladen in his book even the biggest nests never contain
more than a few ounces. In one B. lapidarius nest
that he reared in a nest box he took over four ounces of honey and the nest
still survived. So yes, in theory we can get honey from bumblebees as it is
made by the same method as hive bee honey, but the quantity is so small that it
would never be commercially viable to do so. Also, I believes, that it is
thinner and more watery the honey bee honey, so ferments more easily. One
average sized bumblebee making about ten foraging flights a day would bring
back enough nectar to make about 3 ml of honey. But to recover the honey you
would have to break into the nest, destroy the honey pot during extraction and
probably destroy eggs and young in the process.
Bumblebees nests are not neat
organised affairs like honey bees nests, they are rather untidy and
disorganised.
To make a one
pound jar of honey the honeybees must visit and suck nectar from about 3 000
000 flowers of red clover or 2 000 000 flowers of vetch. Think of all that work
next time you spread it on your toast!
How do bees make honey?
Honey is really
just concentrated nectar, and nectar is mainly a mix of different sugars that
are secreted from flowers into their nectaries. The bees suck up the nectar
using their tongues. The tongue is long and
feathery at the end. It is contained in a sheath formed by a pair each of palps
and maxilla (these are just mouthparts). Together the palps and maxillae act a
little like a straw, so the bee sucks the nectar up this and into her
honeystomach. The honeystomach is
just a storage bag, and when she gets back to the nest the bee empties the
honeystomach into a honeypot. So all the nectar that has been sucked up through
her mouthparts has to pass up through her mouth again. There may also be a few
pollen grains mixed in with the nectar too. The temperature of the bee's body
is almost the same as a human's so while she has been flying around some water
in the nectar will have evaporated, and then inside the nest it is quite warm,
so again more water will evaporate. After a while, once more water has
evaporated from the honeypot the sugars are more concentrated and the contents
can be called honey. It is said that honeybee honey is more concentrated than
bumblebee honey, and because of this honeybee honey can keep longer as the high
sugar content preserves it better.
There are three types of
honey, flower which I have described above, forest and leaf honey. The source
of these other two is very interesting. Quite simply they are made from the
excrement of aphids and scale insects. These insects suck the sap of plants,
but the sap contains much more sugar than they need, so they excrete the extra
sugar. This is what we call honeydew. Now these insects can exist in huge
numbers so the honeydew can be splattered over the leaves and pine needles of
plants (it is also this which car drivers find gumming up their windows in
summer) the bees collect this lovely sugary liquid in the way described above
(ants also collect it, and even "milk" aphids for it) and it is treated just
like nectar. In the bible the manna from heaven that rained down on the Jews as
they passed through the desert is thought to have been honeydew from a type of
scale insect commonly found on tamarisk. |