I went through the hives yesterday feeding and marking the queens I could find. All had brood, pollen coming in, etc. The strongest hive had a full frame of drone brood along with other frames of normal brood. I'm not sure what to think about it, but I think I'll leave it to hatch as I plan some splits in a few weeks. This hive also has some 'attitude', but most of the best producers seem to be that way. I wonder if the drone brood points to a stronger swarm urge?