Had I not seen this with mine own eyes, I would not have believed it. I have always heard you should be on the look out for robbing, especially when one hive is considerably weaker than the others, but I never encountered this behavior in my apiary... until now. In the video above you can clearly see many bees on the landing board holding on tightly and attempting to lift and fly off with my hive and the colony within. I'm pretty sure they would have too had I not intervened and placed a heavy rock on top of the telescoping cover. But now I fear the rock I chose is not heavy enough so if enough of these thieving bees join in and organize themselves when I am not at home to guard against it, they will fly off with my hive.
It seems I have two choices: 1) find a bigger rock or 2) nip this in the bud by simply pulling a wing off each bee I see trying to make off with my precious honey. If I just find a heavier rock, it seems that eventually (and we're talking eons I know, but still) natural selection will result in stronger and stronger robber bees and I, or whomever tends to my bees in the distant future, will always be searching for heavier and heavier rocks. I'm leaning towards choice #2. I think if I pull a wing off each robber bee I find, as long as I am careful to pull only right wings, I can save my bees and honey. I realize the thieving bees might still be able to lift off with my hive, but they will be flying in a circle so I should be able to catch them before they get too far. So what should I do?