I've been trying to feed my two hives to help them build up winter stores and things were going good. I fed them yesterday (appx. 1/2 gallon each 2:1 syrup) and everything looked ok. This evening there is pandamonium outside with bees flying everywhere, there are dozens wrestling on the landing board and deck beneath them. I can't tell if one of the hives is robbing the other or if is another colony. I did notice quite a few going in and out of a nuc box I had sitting behind the hives - that I've never seen before. I won't have a chance to check them in daylight until Friday morning. Is it possible that another swarm has found the nuc box and began robbing my other two hives? The wrestling is going on in both of my hives, not just one as I would think would be the case if one was robbing the other. If this is so, how do I prevent them from taking everything they've worked so hard to store. I'd hate to lose them to robbing now!!! Thanks in advance, I'm sure you all will have lots of help for me. Thanks.