I've done plenty of reading on forum about what robbing looks like. I haven't seen this before with my hives until today, wish I had it on vid. Anyway, I just finished inspecting the hive on the left, everything went fine, and I put it back together, there are bees on the outside of the hive now, but they are calm, and some are casually coming and going. Then about 1/2 hour later, the hive on the right, I saw huge amount of bees in an aggressive frenzy, pointing towards the entrance, loud buzzing, some fighting on the ground but only maybe two fights going on. It looked like robbing to me, so I closed off the entrance to where one or two bees can get in and out. Nothing Doing... the bees pushed the block away and were coming out enmass. So I duck taped it... Not Gonna Work... So I put a nail up against the block. The rucous has simmered down but there is still a couple of hundred frenzied bees at the entrance.
Is there anything else I can do or should not do?
I'm also going to curl up with my Beekeeper's Handbook