Dutch Honeybee Colonies Face Persistent Winter Losses for Fourth Consecutive Year

Nearly a quarter of honeybee colonies in the Netherlands did not survive the winter of 2025–2026, marking a continuation of a concerning upward trend in winter mortality. According to findings from the annual survey of Dutch colonies, 24% of these vital pollinators perished during the colder months, a figure that highlights persistent challenges for beekeepers and the wider ecosystem.

This latest statistic represents the fourth consecutive year in which winter colony losses have exceeded 20% across the Netherlands. The consistent high mortality rate suggests an entrenched issue, rather than an isolated incident, with the percentage of lost colonies showing an ongoing increase over recent periods.

The health and survival of honeybee populations are critical for both natural ecosystems and agricultural productivity. Honeybees play an indispensable role in pollinating a vast array of crops, including fruits, vegetables, and nuts, which form significant components of the food supply. Their decline can lead to reduced crop yields and impact biodiversity, making sustained losses a matter of considerable ecological and economic concern.

For Dutch beekeepers, the repeated high winter mortality rates translate into substantial operational difficulties and financial burdens. Rebuilding lost colonies requires significant investment in time, resources, and new queen bees, impacting the sustainability of beekeeping operations. The consistent nature of these losses underscores an environment where honeybee health is under increasing pressure.

While the specific causes behind this sustained trend are not detailed in the summary of the annual survey, experts commonly cite a complex interplay of factors contributing to bee decline globally. These often include habitat loss, exposure to pesticides, the prevalence of diseases and parasites like the Varroa mite, and the impacts of climate change, all of which can weaken colonies and make them more vulnerable during winter months.

The figures, initially reported by Phys.org, serve as an important indicator for scientists, policymakers, and beekeeping associations. They emphasize the need for continued monitoring and research into the specific pressures faced by Dutch honeybee populations. Understanding the underlying drivers of this persistent winter mortality is crucial for developing effective strategies to protect and support these essential insects.

As the trend of elevated winter losses continues into its fourth year, the spotlight remains firmly on the long-term viability of honeybee populations in the Netherlands. Addressing these challenges effectively will require collaborative efforts to ensure the health of bee colonies, safeguarding agricultural output and the broader natural environment for future seasons.