Do fall swarms ever return to the originating hive? This colony has a very full deep and very full medium and the number of bees surprised me when I took a good look today. Wall to wall bees. I'm sure it's hard to track bees, but wanted to see if anyone had large population influxes before winter that's unrelated to brood rearing. This one swarmed in August. Also had a varroa spike in this one that I'm knocking down with an OAV series.