STOP! THIEF! I'm Bee-ing Robbed!

...or not.  Heard a great frenzy of in-flight bees surrounding the hives.  Thirty minutes later it was calm inside and outside the hives.  But, still, there were these large galutes coming and going, and not a one of them was seen to be bringing home pollen for the good of the colony.  Just don't know, are these drones?  Robbers?  Just big, lazy ladies?