Saturday, May 15th: cool and breezy. Not an ideal bee day but I'm not keeping up with them very well. I opened the first colony. A couple bees seemed annoyed. The phone rang and as I talked for the next 20 or 30 minutes, a lone bee kept batting at my head, until I walked away into the woods.
That colony looked good—lots of brood, nectar, and pollen.
After the phone call I opened the 2nd hive. Suddenly I had a cloud of bees around my hands. I backed away, but too late. Later I counted 4 stings. I closed up that hive but a cloud of bees followed me around the yard so I gave up for another day.
Sometimes "hot" hives return to normal. Sometimes "hot" is a reaction to some sort of stress. I'll use gloves when I work that hive. Some experts say there's no correlation, but in my experience, aggressive hives often produce lots of honey.