45 Interesting Facts About Bumblebees

45 Interesting Facts About Bumblebees

• There are over 250 known species of bumblebee worldwide, and 24 in the UK.
• Only the worker bees and Queen have a sting.
• Bumblebees feed on the nectar and pollen made inside flowers.
• Nectar is a sugary liquid that gives bees energy.
• Two types of bumblebee have already completely disappeared from Britain (the Cullum’s bumblebee and the Short-haired bumblebee).
• Bumblebees also use their wings to raise their body temperature.
• Bumblebee species are on the decline in Europe, North America and Asia, predominantly due to the rise in industrial agriculture.  This will also have a catastrophic impact on other wildlife which are dependent on these plant species. This illustrates the huge importance of bumblebees and why they are known as a ‘keystone species’.
• You can take a bumblebee in your hand and as long as you do not treat it roughly, it will not sting you at all. However, if you see a bumblebee lying on its back, then it is best not to touch it. This position is a defensive position and they will feel threatened and prepare to sting.
• Unlike the honeybee, the worker bumblebee does not leave its sting in your skin when it has stung you, this means it is capable of stinging you more than once. The poison they inject with a sting is harmless, but can be harmful to those allergic to wasp stings.
• Just like mammals, bumblebees control their own body temperature. They can detach the muscles which they use to move their wings. By moving the detached muscles rapidly they produce their own body heat. This is the reason you can sometimes find a motionless bumblebee on the ground or on a flower. It is not dying or sick, but simply heating up its own body and they are unable to fly because of their wing muscle detachment.
• Bumblebees generally visit flowers exhibiting bee pollination syndrome. They can visit patches of flowers up to 1 – 2 kilometres from their colony. Bumblebees will also tend to visit the same patches of flowers every day, as long as nectar and pollen continue to be available. While foraging, bumblebees can reach ground speeds of up to 54 kilometres per hour. 
• In a few species of bumblebee, once it has visited a flower, it leaves a scent mark on the flower. This scent mark deters visitation of the flower by other bumblebees until the scent disappears.
• Once they have collected nectar and pollen, bumblebees return to the nest and deposit the harvested nectar and pollen into brood cells, or into wax cells for storage. Unlike honey bees, bumblebees only store a few days worth of food and so are much more vulnerable to food shortages.
• During warm summer periods, bumblebees hover at the top of the nest and vibrate their wings in order to circulate the air and maintain a nice cool nest, performing the work that a ceiling fan does for humans.
• Bumblebees use a combination of colour and spatial relationships to learn from which flowers to forage. They can also detect both the presence and the pattern of electric fields on flowers, which occur due to atmospheric electricity, and take a while to leak away into the ground. They use this information to find out if a flower has been recently visited by another bee.
• While bumblebees are fascinating and wonderful animals that deserve to be protected for their inherent value, their ecological and economic value is also undeniable, with around one-third of human food requiring bee pollination. Many arable and horticultural crops depend on bumblebees for pollination. In some regions where hedgerows (where queens forage and build nests) are scarce, crop yields are already falling.
• Bumblebees keep a body temperature of 34 to 38 degrees centigrade, this is why it is common to see bumblebees even on colder and rainy days in the spring and summer. Only in winter, when temperatures drop, they will go into hibernation. Honeybees, however, will only become active only when temperatures are above 15 degrees centigrade.
• Bumblebees are very important pollinators to many plants, flowers and fruit trees. It is very interesting to quietly observe a bumblebee at work. Watch them in your garden – without disturbing them – and see how fascinating they are.
• However, because bumblebees are much more opportunistic feeders than honey bees, these shortages may have less profound effects. Nectar is stored essentially in the form it was collected, rather than being processed into honey as is done in honey bees. It is therefore very dilute and watery and is rarely consumed by humans.
• Bumblebees are large, hairy bees and are close relatives of the well-known honeybee. Most species of bumblebee live in colonies, but their colonies are much smaller than the honey bees or wasps who can have up to several thousand individuals, the bumblebee colony will only consist of around 50 – 150 individuals. (You might hear the bee on the left buzzing)!
• We can recognise Bumble Bees from their very loud buzzing. They can be seen bobbing around flowers and are a good indication that spring is here.
• Bumblebees are usually a very distinctive black and yellow colour, although they can be red and black or orange and black. Another obvious (but not unique) characteristic is the soft nature of the long, branched setae, called pile, that covers their entire body, making them appear and feel fuzzy. The female worker bumblebee has a stinger and is capable of stinging although they are never too willing to sting. A male bumblebee has no stinger and therefore cannot sting.
• The bumblebee is peaceful and not aggressive, even compared to the honeybee. They only attack people when they are threatened. So if a bee is buzzing near you the best thing you can do is stay calm and let it fly away in its own time rather than flapping about, which is more likely to cause you and the bee harm!
• Bumblebees are social animals and colonies can contain up to 150 individual bees. This is however quite small compared to honeybees that can have nests with over 50,000 bees.
• A cuckoo bumblebee will lay its eggs in the nest of other bumblebees, and leave the workers of that nest to rear the young. This is a clever form of deception which enhances the bee’s evolutionary fitness.
• Unlike many other species’ conservation efforts, bumblebee conservation is genuinely something that everyone can play a major role in. A great way for everyone to help bumblebees is to plant wildflowers in gardens or in plant pots for window ledges.
• In Native American symbolism, the bumblebee represents honesty, pure thinking, willingness and drive.
• A bumblebee does not have ears, and it is not known whether or how a bumblebee can hear sound waves passing through the air, however they can feel the vibrations of sounds through wood and other materials. The heart, like that in most other insects, runs down the entire length of the body. Their fat body is a nutritional store. Before hibernation, queens eat as much as they can to enlarge their fat bodies. The fat in the cells is used up during hibernation.
• In Britain, until relatively recently, 19 species of native true bumblebee were recognised along with six species of cuckoo bumblebees. Of these, three have already become extinct, eight are in serious decline and only six remain widespread. A decline in bumblebee numbers could cause large-scale changes to the countryside, due to inadequate pollination of certain plants. Bumble Bees are an endangered species.

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