In the heart of Wales, a dedicated group of volunteers is engaged in a unique and inspiring mission to protect one of Britain's rarest butterflies, the High Brown Fritillary. This story is not just about saving a species; it's a testament to the power of human effort, community, and even the unexpected role of cows in conservation. What makes this endeavor truly remarkable is the passion and dedication of individuals like Paul Dunn and Richard Smith, who have turned their love for nature into a full-time pursuit.
The High Brown Fritillary, with its striking orange and black wings, has seen a dramatic decline in numbers, dropping by 62% since 1970. This decline is attributed to its highly specific habitat requirements, which are challenging to replicate and maintain. The species relies on a delicate balance of bracken and common dog violet, a combination that is becoming increasingly rare in the modern world.
Paul Dunn, a key figure in this conservation effort, has been working tirelessly for over 30 years in the Alun Valley at Old Castle Down, near Bridgend. He explains, "They are the pickiest." This dedication has paid off, as the area has become a haven for the High Brown Fritillary, with numbers increasing thanks to the volunteers' efforts.
One of the critical aspects of this conservation strategy is the management of bracken. Traditionally used as animal bedding, bracken is now less common due to the availability of straw. However, it plays a vital role in the High Brown's life cycle. Richard Smith notes, "It hasn't been able to adapt its life cycle away from this need from a certain temperature on the ground. The cutting of the bracken is essential."
The volunteers have been hard at work, coppicing hedges and creating the specific ecosystem needed for the High Brown's survival. This includes managing the bracken to ensure the growth of the dog violet, the food source for the caterpillars. The volunteers have also enlisted the help of cows, allowing them to graze on the site. This practice creates an uneven ground structure, providing little niches where temperatures can be higher, which is essential for the caterpillar's growth.
The use of cows is particularly interesting. Richard Smith explains, "Cattle are great because they trample bracken without eliminating it and create an uneven ground structure which is also good as it creates little niches then where the temperatures can be higher than the surrounding area."
This innovative approach has been made possible by securing solar-panelled collars for the cows, creating a "no-fence grazing" perimeter. This ensures the cows stay within the designated area, allowing them to graze freely while maintaining the habitat.
The impact of these efforts is evident in the increased numbers of High Brown Fritillaries. While yearly weather patterns can affect the population, the overall trend is positive. This success is a testament to the power of community and the unexpected allies that can be enlisted in conservation efforts.
Dot Williams, a volunteer who has been part of the team for 11 years, sums it up perfectly: "It's the butterflies that brought them together, but it's grown into much more than that, it's a community."
This story is a powerful reminder that conservation efforts can take many forms and that even the most unexpected allies can play a crucial role. It is a beautiful obsession, as Paul Dunn puts it, and one that has the potential to make a significant difference in the world of conservation.
