I moved an apidea into our back garden the other day. I suspect it's queenless but I digress.

I had a quick peek tonight just to see what they were up to in the moonlight and saw a little congregation at the entrance.

Closer inspection showed it to be a snail, handily blocking the entrance, and an angry hum of trapped bees inside.

I'd be a liar if I said I paid too much attention to whether the snail was still alive or not, but it is now removed from the entrance.