I was looking though one of my hives the other day when I spotted a strange looking bee on one of the frames.
On closer inspection it turned out to be very strange - an Early Bumblebee (Bombus pratorum). It had its head down in a cell, drinking nectar. (For non-beekeepers the big-eyed bee in the foreground is a drone, a male honey bee.)
For well over a minute the honey bees took no notice of the bumblebee but eventually it was spotted by one of the guards.
After a quick check to make sure it was an intruder there was a fight and they fell to the floor of the hive. I couldn't see if the bumblebee got out alive.
It is something I haven't seen before as foreign bees usually can't get past security at the entrance.