Dancing Bees?

I was taking a look at the bees today, it was another very hot summer day so there were a lot of bees bearding around the front of the hive. There were a lot more around the entrance of the Mint hive. The bees on the front porch seemed to be fanning to cool the hive down, but I'm not sure what these bees on the side are doing (rapidly moving their front legs). Dancing perhaps?