Yup, Kinda crazy isn't it. I think this long warm spell allowed them to catch some flow off the maples. It's usually to cool for them to bring much of it in. I have never seen them build up this early this quick and thats the only thing I can think of.. They were building burr comb on the inner cover! I threw a undrawn supper on the old hive to let them work on and the swarm hive is building like mad.