I knew this could happen, but have neglected my inspection duties and...
I took a trip out of country and now that I've returned the hive has become overpopulated <2 deep, 1 super with capped comb> and the girls have swarmed off onto a tree <40 ft up!> I put a new super on <too little, too late>.
Is there ANY chance they might have second thoughts and return? The queen is probably with them, correct? Seems to be only half since there are still plenty in the hive.
This late in the year, the hive is probably doomed for the winter, right?
ps. What should I look for when I do the 'post mortem' inspection?