While everything outside the hive might look quiet and still during winter, inside, your bees are very much alive and working together to survive. Unlike many insects that hibernate or die off in cold weather, honey bees have evolved an incredible system to keep the colony warm and fed through the cold months.
At the heart of winter life in the hive is the winter cluster. As temperatures drop, bees form a tight ball around the queen and the remaining stores of honey. The cluster contracts and expands depending on the outside temperature. When it’s very cold, bees pack closely together to conserve heat. As it warms slightly, the cluster loosens so bees can move to new sections of stored honey.
Bees take turns rotating from the chilly outer layer of the cluster to the warm inner core. This movement helps regulate the cluster’s temperature, which they keep around 34-35°C at the centre to protect the queen and any brood. The workers generate heat by vibrating their wing muscles, consuming honey to fuel this activity.
You might notice little to no activity at the hive entrance on cold days, but don’t panic — this is perfectly normal. On warmer winter days (usually above 10-12°C), bees may take short flights to relieve themselves — known as cleansing flights — and may even briefly scout for food.
Winter is also a time of population decline in the hive. The queen usually stops laying eggs in late autumn, and without new brood being raised, the colony depends on the long-lived winter bees to carry it through until spring. These bees, raised in late summer and autumn, are physiologically different to summer workers — they store more fat and protein to last the several months ahead.
From the outside, it may seem like nothing is happening, but the hive is very much alive — quietly buzzing with collaboration and survival instincts. As a beekeeper, it’s a good time to trust the process and resist the urge to open the hive unnecessarily. Instead, focus on making sure the hive is well-insulated, secure from moisture and wind, and well-stocked with honey (or supplementary feed if needed).
By understanding what’s happening inside the hive in winter, you’re better equipped to make thoughtful decisions that support your bees without disrupting their delicate winter balance.
