I am new to beekeeping. The hives did well through the winter and this being my first spring, I have split some of my hives up into nucs to try to reduce the risk of swarming and overcrowding, but with the recent hot weather I have one hive that continues to have a large amount of bees covering the brood box, which from what I have read is possibly overheating. They are in partial shade but do get full sun during parts of the day. Should I move them or is this the norm.. for the bees. I have 2 stickies on it too.