Queen outside the hive

Doing my routine walk around the hives this morning I noticed a couple bees sunning themselves on the outside of the entrance.  A closer look revealed that one was a queen, so I picked it up for a closer examination.  Finding nothing abnormal, I put it back and it then flew off.  My only thought is that I may have killed the original queen while doing my honey harvest, but the dates didn't coincide with her appearance, maybe they are just superseding.  Hope she finds a couple good mates this time of year.  Otherwise all is normal.  I did find some beetle larvae in the drop pan from the last hive I harvested Monday this week.  Not unusual for the beetles to try and get a hold while the hive is a little disrupted.  Finding them on the bottom means the bees are back in a cleaning mode again which is what I would expect.  The harvest yielded about 15 lbs on the outside bars (5) as there was still brood in the center so I left those in and replaced the box.  Later