That's what my bees are doing this season! So far they've been very docile, but they're very strong, very noisy and very active! There are thousands of them at the entrances to the hive, both upper and lower, they are beelining like crazy (so there must be some good nectar out there), and they are the loudest I've ever heard them! That "lion's roar" makes me feel like I'm gonna be attacked any minute! You've got to see it to believe it. Every day between 2:30 and 4:30 there is a lot of orientation going on. All four hives are doing it, so I'm assuming it's nothing to do with swarming and that for the season/environment they're all doing what needs to be done, but it's nothing I've ever seen before. It is not robbing; that I'm sure of. As you know, I was just in them a couple of weeks ago and there was lots of eggs, larva and capped brood. As weird as this sounds, I'm wondering if they need another box! I don't want to give them room they can't protect (I'm having big problems with SHB) but then again, I don't want them so crowded they abscond or swarm in October!