Because it probably is not that much fun to be hard at work and have a Giant come and remove your work station, examine everything with clumsy Giant hands, coo at you in a Giant babytalk voice and then replace your workstation nearly crushing some of your co-workers, I try not to check on my hives too frequently. Saturdays are my days to check in with them just to satisfy my curiosity--they have no need for my scrutiny.
In the last month, the hive that I call Washington has built comb in 8 of its frames, the newly-built comb is now filled with eggs, larvae, honey and pollen. The hive that I call Madison is slightly more productive, it has one entire super (10 frames) heavy with bee produce and the bees have started working on the second super. The supers are piled one atop another so the bees work their way up.
The bees in the hive at mid-day are probably the younger bees, newly emerged themselves they become the nurse bees to the eggs and the larvae--they care for the brood around the clock for roughly the first two weeks of their adult life. During this period the nurse bees do not display any circadian rhythm. An interesting article on this subject appeared in the New York Times last week. At about two weeks of age, the bees become foragers and at that time their circadian rhythm kicks into gear and they learn to make their flights for nectar at the time when the flower is releasing it in highest quantities. The foraging is hard work and the worker bees usually die by the time they are four weeks old, but by then the brood they had been tending as nurse bees are ready to take over their jobs.
I stopped feeding them sugar water last week as there are violets and dandelions blooming in the grass and forsythia, wild strawberries and azaleas showing color in the flower beds. Within a week or two my mother's yard will be a feasting bonanza for the bees as the lilac, apples and grapes blossom.