Busy Bees

“Yes!” I thought, “This is how it starts!”

My sister in law returned one afternoon last week with the news that a member of her women’s group was looking for someone to deliver a lecture on bees.

“I told them my brother in law is a bee expert,” she said, “he blogs about them all the time” (sic).( As if blogging implied expertise on anything!)

“Still,” I thought, “why not?  It might be an interesting experience and it can’t be anything that Wikipedia and I wouldn’t be able to manage together. Plus of course it’s true, I did write a piece about neonicotinoid pesticides and how they are destroying bee populations around the world.  So today the Bangalore women’s group, tomorrow the international lecture circuit!”

My sister in law looked slightly surprised that I was interested, but she promised to get me more details.

“It’s a school thing.” She told me next day.  “They want you to talk for 45 minutes to an audience of 15 year olds.”

School?  Alright I can do that.  Fifteen was a bit younger than I expected, but OK, they would probably be studying environmental degradation as part of their IB curriculum.  I could rework my research on neonicotinoids. And 45 minutes! Well I could always add a bit about the difficulties of contamination in field trials of pesticides, discuss political engagement in the 21^st century, and maybe talk about the whole history of bee keeping back to ancient times.  It could be right up my street!  My public speaking career has to start somewhere.

The next day it changed again.  “I got it slightly wrong, “she blithely explained.” “They only want you to talk for 15 minutes, to a class of 4 and 5 year olds.”

The silence was palpable.  I have occasionally considered starting a new career as a teacher.  How hard can it be?  And all those holidays! But never in my wildest imaginings did I see myself teaching in a kindergarten.

I have kids of my own, but when they were that age I was commuting three hours each day to and from London.  My main memory of 5 year olds is of kissing their foreheads as they lay sleeping. There was one infamous birthday party that stands out in my memory. I ended up screaming at 15 boys, who were all hitting each other with Harry Potter wands, which I had actually made and given to them.  My wife came out to the garden with a tray of drinks just in time to hear me bellowing at the top of my voice: "Effing shut up and effing sit down!”  I was promptly reassigned from master of ceremonies to making egg sandwiches. “Who arms 5 year old boys?” She asked incredulously.  So no, I did not really view this latest change to the proposed event as a positive.

Anyway, whatever my reservations it seemed it was too late to change my mind on the bees.  “They are really excited” my sister in law continued, “and the teacher has sent you a list of questions from the children.” 

Needless to say there was no mention of killer pesticides or the obstructive attitudes of EU politicians.  The first question was, “Why are bees black and yellow?”

So I dived back in to Wikipedia to do some serious research about bees.  And last Wednesday at around 10.00 A.M.  I found myself in a beautiful little garden belonging to one of the parents standing in front of a dozen or so excited kids and a few expectant parents.

Actually it went OK.  It was in roughly equal parts an exercise in education and crowd control, but the class teacher was on hand to deal with the worst of the cat herding and I didn’t swear once!  I over estimated my audience by some orders of magnitude, but apart from a couple of slips into ‘camouflage’ and ‘enzyme’ I largely managed to avoid polysyllables and I kept their attention pretty well to the end.

Interaction seemed to be both the key and the biggest risk.  On the one hand they loved doing the ‘waggle dance’ but then I had to get them back into a sedentary position again.  Asking them to name their favourite fruits got them engaged, apart from one little Japanese girl who said with a sinister grin that she wanted to eat me.

So it might not have launched my public speaking career, and it definitely convinced me that I do not want to be a kindergarten teacher, but to be fair I had a blast, and I also learnt a lot about bees.  If you are interested, the Q&A is posted below this blog.

Why are bees important?

Well all creatures are important. Nature is like a jigsaw puzzle, and every part has its place.  Every creature is necessary to complete the picture.

But bees are especially important.  Yes, they make delicious honey, but more, much more than that.  When bees go from flower to flower to gather nectar, they spread pollen which makes fruit and vegetables grow.

What’s your favourite fruit?  [We were in a garden where the children could see mangos, coconuts, bananas, strawberries and tomatoes all growing]  Well all of those fruits need bees to pollinate them.  And so do: nuts; cabbages, broccoli and sprouts; tomatoes; peppers, chilies and other spices; cucumbers; melons; marrows; courgettes; aubergines; avocados; tea and coffee.

In all, over 1/3 of all the world’s food is pollinated by bees.

Why are some bees different sizes?

Well for a start there are over 20,000 different species of bee and probably more that we don’t recognize.

Some bees live in big colonies with tens of thousands of brothers and sisters.  While some bees live all by themselves.  Some bees make holes in rocks to make a home.  We call these masonry bees. Some burrow into wood.  These are called carpenter bees. Some bees live underground. And then there are cuckoo bees.  They don’t even make their own homes, they lay their eggs in other bee’s hives and let the workers there feed them and bring them up.  Then there are honey bees, which are the ones we are going to look at today.

In a honey bee hive there are three different kinds of bee.

First of all, the biggest bee is the queen.  There’s only one queen and her job is to lay eggs.  She is the mother of all the other bees in the hive.

Then there are the worker bees.  These are the ones we usually see flying about.  The workers are all female.  Girls do all the work in this house.  They all have special jobs.  Some go out to collect nectar and pollen. Some stay ay home and clean the hive or look after the young ones.  Others make the honey and build the hive by making beeswax.  Only the workers have a sting.

The third kind of bees are the male (boy) bees, the drones.  They don’t go out.  They just sit around the hive all day eating and drinking.  Their job is to make babies with the queen.

Why are bees black and yellow?

Colour is usually used in the animal kingdom for two reasons.  Some creatures use colour to blend into the background to hide.  You know how soldiers wear camouflage to hide?

Other creatures use bright colours to stand out and be seen.  To most animals yellow and black means danger.  Some poisonous snakes and frogs are yellow and black. We use yellow and black on road signs or as warnings on dangerous buildings to tell people to be careful. Bees are basically saying “Look at me! I’m dangerous!  Don’t eat me!  You won’t like it!”

If you did ever eat a bee you would remember it, and next time you saw a yellow and black creature you would avoid it. Right?

Why do bees buzz?

Bees have to flap their wings to fly.  They flap them very fast at 11,000 times per minute, which is why it sounds like they are "buzzing".

How do bees make honey?

To begin with flowers make nectar to attract the bees.  Remember, flowers need bees to visit them to help pollinate them, so they give the bees something in return. Nectar is rich in sugar.  If you ever eat flowers they sometimes taste sweet.

Worker bees visit the flowers and suck up the nectar through their long, tube-like tongues. Bees have two stomachs.  As well as a normal stomach like we have, they have something called a honey stomach.  This is where they collect nectar and pollen from flowers in their honey stomachs.

Honeybees must visit between 100 and 1500 flowers in order to fill their honey stomachs.  They can carry almost their own weight in nectar.

The honeybees return to the hive and pass the nectar onto other worker bees from mouth to mouth. These "house bees" chew the nectar for about half an hour. While they do that, special chemicals in their spit called enzymes get mixed with the nectar and this helps make the honey. Then they spit it into the honeycombs and dry it by beating their wings.

Why do bees make honey for us?

They don’t. They make it for themselves.  They feed it to their babies to make them grow big, and in the winter when there aren’t many flowers blooming, the bees all stay in the hive and huddle together to keep warm, and they eat the honey they made in the summer.

In one year, a colony of bees eats between 50 and 100 kg of honey.

Humans are just one of a long list of other animals that like to eat honey.  Can you think of some others?  Badgers, bears, civets, honey badgers, jackals, monkeys, possums, raccoons, skunks and even little mice all steal honey from bees.

Why do bees make wax to cover the nectar?

Beeswax is strong, sterile, airtight, easy to work with and they can make it themselves.  It’s the perfect material for bees to make honeycomb.  Worker bees make beeswax from glands in their heads.

We used to use beeswax for all kinds of things like making candles and wood polish.  Even today some of the most expensive lipsticks are made with beeswax.

To produce their wax, bees have to eat about eight times as much honey by mass. So to make one kilogram of beeswax the bees need to eat 8 kilograms of honey.  Imagine how long it takes to collect enough nectar to make 8kg honey and how far the bees have to fly from flower to flower to gather it.  Well, if only one little bee had to do that all by herself it would be the same as if she flew right around the world 12 times!

Bees collectively fly 500,000 km, roughly 12 times around the earth, to yield one kg of beeswax.

How do they find the flowers?

How do you find flowers?  With your eyes and maybe with your noses.  Well bees are the same. Flowers give off scent to attract bees.  Can you smell the lovely frangipani?  [We were in a garden.] Well that perfume is not really for our benefit, it’s to attract bees. Remember flowers need bees to pollinate them.

Bees are only able to see blue, green and violet. But they can see a different type of light known as ultraviolet light, which is invisible to the human eye.  Ultraviolet, or UV light, comes from the sun. When UV light reflects off yellow or white flowers it makes them look purple or violet to bees. 

Scout bees go looking for new places to find nectar and when they find a bush covered in flowers they fly back to the hive and tell the others. They tell the other bees in the hive where to go by performing a ‘waggle dance’. The scout bee goes round and round in a big number 8, and every now and then she waggles her bottom to tell the other bees how far away the flowers are.  The more she waggles, the further they need to fly.  When they’ve got the information, the other bees all fly off to the bush and start collecting the nectar.

When do bees hunt for nectar?

Ultraviolet light comes from the sun so bees go looking for nectar on sunny days.  If the sun isn’t shining they don’t bother.

However some flowers only give off scent in twilight, and there are some bees that know this and they only go out as dusk to find them.

What happens when the hive gets too big and there are too many bees living there?

At some stage the queen decides the time has come to start a new hive.  The worker bees make special honeycomb cells called queen cups, and when the queen is ready she lays eggs in the queen cups and then flies out of the hive.  It’s the only time she ever leaves the hive.

About half the workers, tens of thousands of them, follow her and they usually settle on a nearby tree or wall.  This is called a ‘swarm’.  It can look scary but the bees aren’t really dangerous because all they want is to find a new home.

When the queen choses a new place, her followers all start to build a new hive around her, and when it’s ready she starts laying eggs again and a new hive is established.

Meanwhile, back in the old hive the eggs in the queen cups hatch. The worker bees that stayed behind start feeding the babies with a special food called ‘royal jelly’.  This makes the babies grow up as new queens.  One of these princesses will then become the new queen of the old hive.

How long do bees live?

Queen bees will live for 4 or 5 years.

Workers only live for about 6 or 8 weeks.  That’s why the queen needs to lay so many eggs to make sure there are always lots of new workers for the hive.

In cold countries, in winter, worker bees can slow their bodies down so that they live longer.