The short version
- The Grazing Project in Jersey has managed approximately 600 sheep using virtual fencing for three years, eliminating the need for physical electric fences on difficult terrain.
- Shepherds report that the technology reduces manual labor hours and allows livestock to graze steep cliffsides and dense vegetation areas previously inaccessible or too costly to fence.
- The initiative is currently trialing the system with cattle to explore mixed-species grazing strategies for wetland restoration and coastal rewilding projects.
Livestock management on Jersey’s rugged coastline is undergoing a quiet technological shift as conservation workers replace traditional electric fencing with GPS-enabled virtual boundaries. The Grazing Project, a local conservation initiative, has spent the last three years deploying these collars across large flocks of sheep, fundamentally altering how shepherds monitor and contain animals in challenging environments. By drawing invisible perimeters via smartphone applications, the system allows livestock to roam freely within designated zones without the physical infrastructure that typically restricts movement or requires intensive maintenance.
The operational impact on daily workflows has been substantial for the team managing the herds. Brothers Ben and Josh Voak, who work with the project, note that the transition has saved them hours of manual labor previously spent installing and repairing physical barriers. In the past, containing animals on steep cliffsides or through dense bracken and gorse required hauling heavy fence poles, wire, and batteries up difficult terrain. This process could consume entire days, limiting the time available for other conservation tasks. The new system eliminates this logistical burden by allowing shepherds to upload grazing sites digitally and release animals immediately.
The technology functions through a combination of audio cues and mild electric shocks delivered when animals approach the virtual edge. Developed in Norway and extensively tested across the United Kingdom, the collars provide real-time tracking capabilities that enhance herd visibility. Shepherds can locate specific animals instantly through the application, streamlining daily counts and reducing the stress associated with searching for strays. This precision has opened up previously inaccessible areas for grazing, enabling more effective vegetation management in ecologically sensitive zones.
Beyond immediate labor savings, the virtual fencing system supports broader ecological goals by facilitating access to difficult terrain. The ability to graze steep cliffsides helps control invasive plant species and maintain biodiversity without the visual intrusion of physical fences. The Voak brothers describe the project as pioneering in its scale, noting that they manage around 600 sheep using the technology. Their experience has attracted interest from other farmers who struggle with animals prone to escaping or navigating complex landscapes, suggesting a potential model for wider agricultural adoption.
The initiative is now expanding its scope beyond ovine management to include bovine species. Four cows are currently undergoing training to adapt to the GPS collars, marking a significant step in testing mixed-species grazing strategies. The goal is to utilize both sheep and cattle together in rewilding efforts, particularly in wetland sites and along the north coast of Jersey. This approach aims to leverage the different grazing habits of each species to restore native habitats more effectively than single-species management could achieve.
The trial period for cattle integration is still in its early stages, with researchers observing how the animals interact within shared virtual boundaries. Unlike sheep, cows may require different training protocols or collar adjustments to ensure compliance and safety. The project team maintains close communication with Nofence, the Norwegian company behind the technology, providing feedback on collar design and functionality. This collaborative approach allows for rapid iteration, with manufacturers responding to field data by introducing improved straps or chains to enhance usability.
The success of this program has drawn attention beyond Jersey, including a feature on Jeremy Clarkson’s documentary series about his Cotswolds farm, where similar technology was used to contain goats. While media exposure highlights the novelty of virtual fencing, the practical benefits for conservation work remain grounded in efficiency and ecological impact. The reduction in physical infrastructure not only lowers labor costs but also minimizes the environmental footprint of farming operations on fragile coastal ecosystems.
As the trial with cattle progresses, the project will assess whether mixed-species grazing can be sustained using virtual boundaries alone. If successful, this model could offer a scalable solution for rewilding initiatives elsewhere in the UK and beyond. The ability to dynamically adjust grazing areas without physical construction allows for more responsive land management, adapting to seasonal changes or specific conservation needs. For now, the focus remains on refining the technology and ensuring animal welfare while maximizing ecological benefits.
The broader implications of this shift extend to the future of sustainable agriculture. As labor shortages and environmental pressures mount, technologies that reduce manual input while enhancing precision are becoming increasingly relevant. The Grazing Project’s experience demonstrates that virtual fencing is not merely a convenience but a tool that can unlock new possibilities for land stewardship. By removing physical barriers, conservationists can restore natural grazing patterns that support biodiversity and landscape resilience.
Looking ahead, the project aims to expand its use of GPS collars across more sites and species, contingent on the outcomes of the current cattle trials. The integration of data from smartphone applications provides valuable insights into animal behavior and grazing patterns, informing future conservation strategies. As the technology matures, it may become a standard component of modern farming and land management, bridging the gap between traditional practices and digital innovation.
Sources behind this briefing
Go to the original reporting
- BBC Science & Environment↗GPS collars making shepherds' lives 'much easier'
