It is finally starting to reliably warm up in spring, although we still have a few cold evenings. Bumblebees are one of the first pollinators out in the spring, and the fuzzy adorableness of their bodies does help retain heat.

With the help of a thermal camera, David Attenborough shows us some other clever tricks that let these “cold-blooded” insects warm up and fly on cold days.


Posted by Gwen Pearson

Writer. Nerd. Insect Evangelist. Have you heard the good news? BUGS!


  1. Interestingly, I have never seen a bumblebee entering a daffodil in this country where this plant is an introduced species. After seeing this video I checked the geographic distribution of daffodils and, yes, they are European. American species of bumblebees are pros at visiting the native jewel weed and the flower seems to be designed for them:

  2. Maybe not daffodils, but in early spring I often see bumblebees in grape hyacinth.

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