I saw Cindi's post on hornets and yellow jackets and it reminded me of this video. I don't know if this was shared on the forum before but it's so fascinating I had to link it.
http://www.youtube.com/watch?v=dp72gXkYJIw
That was fascinating. I know when my bees are attacking the hornets that come around, they make a ball around the hornet and I thought they were suffocating the hornet, but who knows, maybe they are trying to heat up the hornet.
Perhaps they are trying to do what the Japanese bees do.