SOS to stop hedgehogs being killed on roads

By the Editorial Team · Friday, July 31, 2026

Recent research by Nottingham Trent University found that vehicle collisions account for 15 to 29 percent of annual deaths in local British hedgehog populations, with road traffic causing up to 40 percent of total mortality in studied areas. This highlights the urgent need for conservation efforts focused on smaller populations, including creating wildlife-friendly habitats and safe movement corridors, to prevent further declines amid increasing traffic.

Road traffic poses a significant threat to hedgehog populations in Britain, with recent research indicating that vehicle collisions cause between 15 and 29 percent of annual hedgehog deaths in local populations. This study, conducted over an 18-month period by Nottingham Trent University scientists, highlights the role of roadkill as a major factor exacerbating the long-term decline of these mammals.

The research focused on four hedgehog populations of varying sizes, monitoring more than 838 kilometres of routes and conducting 269 surveys to record roadkill incidents. Findings reveal that road traffic accounts for approximately 40 percent of all identified hedgehog mortality in the studied areas. While larger populations experience higher numbers of road deaths overall, their ability to recover is greater due to higher breeding rates. In contrast, smaller populations, especially those with fewer than 15 individuals, are particularly vulnerable, with losses from roadkill potentially threatening their survival.

Hedgehog populations in rural Britain have been declining sharply since 2000, with decreases ranging from 30 to 75 percent in some areas. Factors contributing to this trend include habitat loss, reduction in insect prey, pesticide exposure, predation, injury from farming equipment, and increased road traffic. The study’s lead researcher, Dr. Lauren Moore, emphasized that the impact of roadkill depends on several factors beyond the number of animals killed. These include population size, breeding success, food availability, and other mortality causes, all of which influence a population’s capacity to recover following road collisions.

Experts underscore the importance of supporting smaller hedgehog populations to mitigate the devastating effects of road traffic. Conservationists recommend creating wildlife-friendly environments, such as maintaining wild areas suitable for foraging and nesting, and establishing “hedgehog highways”—small gaps in fences and walls allowing safe movement between gardens. These measures aim to improve habitat connectivity and reduce the risk of road crossings.

Although the research underscores that it is challenging to make roads inherently safer for hedgehogs, managing gardens and urban environments to accommodate their needs offers a practical approach to supporting these populations. The study was funded by the British Hedgehog Preservation Society and the People’s Trust for Endangered Species and was published in the journal Animal Conservation. As traffic volumes are expected to grow, ongoing efforts to understand and counteract roadkill impacts will be crucial to hedgehog conservation in the UK.

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