Bee Knowledgeable: Seasons of the Honeybee

School has started for many of you and Summer Vacation is over. I hope everyone has had a fantastic summer! Although the weather is still warm in a lot of places, cool weather will soon come. Fall is almost here!

So what do the honeybees do as summer fades into fall? What activities are the bees engaged in to prepare for the cold, with meager (if any) food sources for months ahead? What about the other seasons of the year? How do honeybees behave during the different seasons?

Fall
Food supplies dwindle as the last blooms of the summer fade. The hive’s combs should be full of honey and pollen. The amount of food they have been able to gather and store will determine whether the colony will survive winter. The bees also gather tree sap and make into propolis. They use this thick, sticky substance to seal all the cracks inside their hive to weather-proof it. They also block most of their hive entrance, to reduce the cold wind coming in. Here is a photo of propolis along the inside the wooden cover of a beekeeper's hive box:

photo: Abalg

During this time the colony will reduce its numbers. The drone bees will be forced outside the hive and not allowed back in. They cannot work and so have no purpose during the months ahead. The food that the drones would eat will now go to the young workers and the queen. This will help ensure the colony’s survival.

In this video you can see workers bring home full pollen baskets and evicting drones from the hive:

Winter
During the cold winter months the honeybees will cluster for warmth. The entire colony gathers and generates warmth over a section of comb that has the queen, brood, and stored food. The bees on the outside of the cluster will keep close together, forming a tight seal. The cluster will maintain a temperature of 94F using a special technique. They can unhook their wings and still work their wing muscles to generate heat without moving their wings.

The queen will slow, and even stop laying eggs. On the days that it is warm enough to move, the cluster will relocate on another part of the comb that has brood and food. During especially cold winters when it stays too cold to move for long periods, the bees can die of starvation just inches away from the nearest honey sores.

The older workers will continue to die over the months of winter. It is the brood and the youngest bees that will make it through to spring.

Spring
As soon as the days grow a little warmer and the hours of light grow longer, the colony will stir. They feed the queen a little more food, stimulating her to start laying more eggs. As soon as the first flowers appear, workers start collecting food again. This stimulates more growth and the colony begins to rebuild their population.

When winter’s touch has finally faded and the spring rains have come, lush blooms emerge everywhere. The prolific availability of food helps the honeybee population grow rapidly. As the temperature grows warmer, the queen will start laying drone eggs. Once again, the colony will have drone bees. With the booming food supply, this is the season the colony’s population will quickly outgrow their hives. The rapidly increasing young bees and the presence of new drones will induce the nurse bees to make queen cups in readiness for the inevitable swarm. Soon they put eggs in those cups and the larva is fed royal jelly. The queen will leave the hive, taking part of the colony with her in a swarm. Part of the colony stays behind to rear a new queen. A new colony begins. Ideally, a colony will be able to swarm several times in spring. Here is a swarm of bees in a tree:

photo: T.Voekler

Summer
When the weather stays warm, the colony will build to their optimum population and then focus on building food supplies. The honeybees will spend their summer foraging. Summer has its own temperature extremes, but the colony must still maintain the ambient hive temperature. The bees will cool the hive on very hot days by creating a swamp cooler. They place droplets of water all over the comb inside the hive and then fan air inside by beating their wings at the entrance. As the air circulates across the water, it cools the air inside the hive.

The honeybees will spend the rest of their summer gathering honey and pollen from the various plants that are blooming. They work every long hour of light they can and store their food away. Soon fall will come, the plants will stop flowering, and the bees will have to start their winter preparations.

Nature’s seasonal cycle for the honeybees will begin anew.