Quick hive check today. Four hives. One weak, one huge and booming (that one got a queen excluder and a honey super), one all-medium one acting as the wave of the future and not yet needing a super, and one surprise.
The hive I gathered at night last week? My friend had told me that bees had moved in, and I made some assumptions. Today, when I moved it, I noticed it was very light. Pried up the top -- and there were bees in there, yes sirree.
What there wasn't was manmade frames. The bees were making comb attached to the hive cover. Argh.
It's going to need cutting out, but for now I slapped a set of drawn frames under it and have pretty much decided to combine it with the weaker of the three others. That means finding and offing a queen, unfortunately. Too hot and not enough time to do it today, though.
Just needed to make notes to tell me what was what for the next round of hive inspections.