Proper winter preparation for managed honeybee colonies prevents starvation, cold stress, and colony collapse during winter months when bees cannot forage.
Honeybee colony winter preparation is a welfare obligation of beekeepers in temperate regions. Colonies that starve during winter die slowly as worker populations decline and food stores are exhausted. The welfare harm — experienced collectively by thousands of individuals per colony — is entirely preventable through adequate food stores and varroa management. Beekeepers who inadequately prepare colonies for winter, or who harvest too much honey, impose foreseeable starvation welfare harm. Responsible beekeeping prioritizes colony winter welfare by leaving adequate honey stores, treating for varroa, and providing winter insulation in extreme climates.