After I did all my hives today I stopped to watch one of someone elses, it seemed very quite and there was no pollen going in. After about 3mins I noticed the back of my head getting bombed by a couple of bees so decided to move away, I was standing a good 10ft from it, as I moved away I got stung on the back of the head. I have got to say its the most painful place I have ever been stung. I then had to sprint to the car followed by a good dozen or so bees trying to sting, serves me right for not keeping my hood on while just watching.
On the good side the sting doesn't seem to have swollen to badly, I will see how it is in the morning.