Bumblebees are struggling in UK heatwaves - but you can help them
Summary
Bumblebee numbers in the UK are dropping because heatwaves cause them to overheat and reduce their food supply. Data from 2022 showed big population decreases after record high temperatures, and experts say planting more flowers can help bumblebees survive.Key Facts
- UK bumblebees struggle to fly and stay alive when temperatures reach about 28C to 32C.
- Their thick fur and round bodies make it hard for them to cool down during heatwaves.
- In 2022, after record heatwaves with temperatures over 40C, populations of common bumblebee species dropped by 20% to 35%.
- Bumblebees need nectar and pollen from flowers to feed their colonies, but drought and heat dry up flowers.
- If bumblebees cannot find enough food, their colonies grow weaker and produce fewer new queens.
- Climate change is causing more frequent and severe heatwaves in the UK.
- Conservation efforts include planting more flower-rich habitats to provide food for bumblebees.
- Small areas, like pots of native wildflowers at homes, can help bumblebees survive heat and food shortages.
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