Bumblebees don't form swarms like honeybees do. But you might see a few bees flying outside a nest, especially if it's in a bird box or somewhere else above ground. These are male bees hovering outside the nest, waiting for queens to emerge so that they can mate. Male bumblebees cannot sting, and they pose no risk to you at all. Therefore, no action is needed to be taken for them.

You can see a bumblebee drone cloud in the video below:

 

“Bumblebees are key factors in our wildlife. If they disappear many of our plants will not bear fruit. I am proud to be associated with the Bumblebee Conservation Trust”.

David Attenborough
OM CH FRS

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