As a surge in beekeepers has led to increased numbers of honeybees, researchers record them pushing bumblebees and other rival species away from flowers

Honeybees are outcompeting wild pollinators for resources by aggressively bumping into them and chasing them away from flowers, research has shown.

The study, by researchers from Anglia Ruskin University, found that areas where there were higher concentrations of honeybees had fewer wild pollinators, such as bumblebees, solitary bees and hoverflies.

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© Photograph: Dr Tom Ings/Anglia Ruskin University

© Photograph: Dr Tom Ings/Anglia Ruskin University

© Photograph: Dr Tom Ings/Anglia Ruskin University

At Bybi in Copenhagen, a dedicated group of staff and volunteers have built a community for all centred on the production of honey – much of which is given away for nothing. Could it be replicated elsewhere?

The bees at Bybi, a collective of beekeepers in Copenhagen, live on the roof. Their home is a complex of Victorian buildings, right in the centre of the city, that looks like an idealised vision of the modern social enterprise, ennobled by the architecture of the past. It’s a place of cottage industry in concert with nature, where the marginalised are brought in from the fringes and corporations stand waiting to help, where jobs happen but a lot of the work is done by volunteers, and where – this bit is important – a lot of time is spent discussing ideas.

Oliver Maxwell, Bybi’s 48-year-old founder, encourages me to examine the buildings more closely. They were once a prison, a workhouse and a hospital; their functions today – a homeless shelter, a young offender institution and, until recently, a job centre – are not so different. Denmark’s Victorian transformation, from “agricultural backwater to industrialised agriculture”, was reflected in how they treated people, Maxwell says.

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© Photograph: Valdemar Ren/The Guardian

© Photograph: Valdemar Ren/The Guardian

© Photograph: Valdemar Ren/The Guardian

Citizen scientists on UK Pollinator Monitoring Scheme recorded insect visits to flowers during 10-minute surveys

Ubiquitous urban plants often derided as “weeds” are the most attractive to pollinating insects.

The autumn blooms of common ivy, rich in pollen and nectar, are the most visited by insects including bees and butterflies, according to an eight-year study.

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© Photograph: see caption

© Photograph: see caption

© Photograph: see caption

Honey bees are known to leave their stingers embedded in tender flesh once they sting you and fly away. Scientists have now determined that the stinger is able to continue pumping venom into its unfortunate victim even after the bee flies away, thanks to a unique double-piston pump-like mechanism, according to a new paper published in the Proceedings of the National Academy of Sciences.

Different species have evolved different mechanisms for delivering venom, which involves piercing the skin and then pumping venom from a gland or reservoir. Spiders, for instance, have muscles surrounding their venom glands, which contract and eject venom through hollow fangs. Bees, wasps, and ants deliver venom via their stingers, either by contracting muscles around the venom reservoir or through stiff elements called lancets working together to pump venom.

Honey bees (Apis mellifera) add a unique feature: Worker bees fly away after inserting their stingers in the target, leaving the stinger behind. The stinger continues to penetrate the tissue and pump venom on its own, a rare phenomenon known as autotomy. A honey bee's stinger has three main interlocking elements that form the venom canal: a stylet that widens to form the main pumping chamber and two sharp-tipped lancets that slide back and forth, piercing the tissue and pumping venom into the target. But the precise mechanism by which the pumping action is achieved has never been directly observed.

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© Maciej A. Czyzewski/CC BY-SA 4.0

Four native species selected after consultation, but which one adorns which note is yet to be decided

Bees, barn owls, puffins and hedgehogs have been picked to feature on the next generation of banknotes, the Bank of England has announced.

The quartet of creatures were selected after a large-scale consultation settled on wild animals as the theme, with members of the public then asked to pick their favourites out of 18 options divided into three categories.

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© Photograph: Andrew Fusek Peters/Guardian Community

© Photograph: Andrew Fusek Peters/Guardian Community

© Photograph: Andrew Fusek Peters/Guardian Community

Think of Spanish conquistadors bringing smallpox to South America and decimating human populations. B. terrestris is the conquistador of the pollinator world.

A newly introduced "workhorse insect" is displacing endemic bumblebees in Patagonia, unwilding the pollination ecology. A deep dive from Jude Isabella, formerly editor of (metafilter's own) defunct Hakai Magazine.