My husband and I are new to beekeeping, installing our first bees into 2 Warre hives on April 8th. They both filled the top box in about 2 weeks and moved down to the lower box. They filled the lower boxes about half way within another week or so. We added a third box to the bottom and noticed both top boxes were completely capped (as far as we could see anyway). Last week they started hanging down in large clusters in the lowest (3rd) boxes. The middle box is still about halfway filled in on one hive and just about completely filled in the other hive. However I noticed they have uncapped and drained the top box. I thought they would be stocking up this time of year, not draining. Is this normal or something to worry about?
Also, our hives are at a friends property in a location he chose, we were happy to use what ever was offered. They do not get early morning sun, nor evening sun. But a good amount throughout the day. They seem to be doing well and are very active so we weren't too concerned. We recently were offered a new location a block away in full sun. Should we move them or leave them be? They seem happy.
Edited to add: My husband thinks we ought to add a 4th box since they are hanging down in the 3rd. Any thoughts?