It would appear that there are some bees that don't belong coming around my bee hive. Trying to rob and steal. These bad bees are not many and are getting the message. When a bee from a bad neighborhood (any hive that is not mine)comes over, my bees come out in black leather jackets and chains (artistic license). Well for every one bad bee three or four of mine dogpile the bad bee and politley escort it out of the landing area. The bad bee gets a crack upside it's head, it's ego bruised, and recognicition on whose turf this is.
I think I saw my bees with mini spray paint cans marking the side of the beehive.
You can see pics of the bad bee herehttp://www.understudy.net/images/bad_bees/index.html
Look at the red circle area.