Small, medium and large

This is lovely weather for bees and they are all making the most of it.  A couple of photos from the garden this afternoon illustrate the size range of bees.  Using a honey bee as a standard, here is a queen buff-tailed bumblebee (Bombus terrestris).  Worker honey bees weigh around 90mg and large queen bumblebees weigh almost 10 times that.

And here is a small solitary bee which looks as though it might be as little as a tenth of the weight of the honeybee.

I couldn't get a photo of the bumblebee and the solitary bee together.