>i wanted to ask this branch thing before, now is the best oportunity. so what you do, is to put a branch (a branch from a tree, right?) right in front of the entrance? that's all what it takes???
It will help more of them to reorient. Some will still go back to the old location, but if they reorient they usually quickly figure out where the hive moved to. If they don't reorient, they never seem to remember.
>I understand, but does anyone know if there's something else I can do other than moving them away for a week? What about moving them during winter? Wouldn't the bees' dormancy make this easy and effective?
Anytime they have been confined, whether from cold or from closing them up, for more then 72 hours they will reorient. So yes they will reorient. The problem is moving them when they are cold without knocking bees to the bottom board that are too lethargic to move back up. If you can move them gently enough, it could work great. If not, it might not work so great. How cold it is is also going to have an effect. If you do it when it's 40 F out it will work better than if you do it when it's -20 F.