These critters have an interesting form of winter survival. They stop flying when the temperature drops below 50 degrees and crowd into the lower portion of the hive, forming a cluster. The worker bees encircle the queen bee and flutter their wings, creating energy to keep the center around 80 degrees. The colder the weather, the tighter the cluster becomes. Observations have shown that hibernating honeybees consume up to 30 pounds of stored honey during the winter months, which helps the bees produce body heat. On warmer days, honeybees will venture out for short flights.
The adult mason bee lives only for about 6 weeks, unlike honeybees. They are solitary creatures and each female makes her own nest. Inside the nest, eggs hatch and each larvae has its own cell and food supply in it’s own compartment. After the larvae feeds, it spins a cocoon and remains there the whole summer. In the fall, the larvae molts and transforms into adult form. They spend the winter as adults in the cocoon and then emerge in early spring to start another generation.
Although bumble bees are a closer relative to honey bees, they do not maintain colonies throughout the winter. The last of the summer colony will contain a number of queens. Each of these queens will mate, she will find a place to overwinter and will hibernate until spring alone. The queen depresses her rate of metabolism which allows her to hibernate while burning very little fuel. In the spring she will find a place to build a nest and begin to lay and tend to her eggs.