Honey bee?

Honey bee?

Observation - Honey bee? - UK and Ireland. Description: Was in the garden today and thought I would finally take some snaps of the different kinds of bees that visit. I'm not sure of any of the names so if you know please tag! Whats interesting to me is if you zoom in on the photo, theres some kind of bump

Was in the garden today and thought I would finally take some snaps of the different kinds of bees that visit. I'm not sure of any of the names so if you know please tag!

Whats interesting to me is if you zoom in on the photo, theres some kind of bump on the bees back, between the wings. I have no idea if this is normal or ( Im totally guessing her) a piece of dirt, fungi infection or mite?