Mustaches ain't got nothin on this beard.

Yes indeed- the actual term for what these gals are doing is "bearding."  They call it bearding because it looks as if, well, the hive has a beard.  The bee's are doing this to cool off a bit. Especially after a hot, humid day like today the girls hang out on the porch to lower the temp of the hive. The hive has to maintain a certain temp for the brood and all around comfort of these oh so pretty girls.