Pearl-Bordered Fritillary: Woodland Butterfly in Serious Decline

The pearl-bordered fritillary (Boloria euphrosyne) has declined by 93% in England since 1976, making it one of Britain most threatened woodland butterflies. Its loss is linked to changes in woodland management that have removed the open conditions it requires.

Key Facts

The pearl-bordered fritillary has declined by 93% in England since 1976
It is now restricted to a few strongholds in Scotland, Wales, South West England, and Dartmoor
Larvae feed on common dog-violet and require sunny, warm ground conditions with bracken or dead leaf litter
Adults are the earliest fritillary to emerge in spring, flying in late April and May
The decline is closely linked to the abandonment of traditional coppice woodland management
Open, recently coppiced woodland glades with violet plants are critical habitat
It is a UK BAP Priority Species and has been the focus of targeted recovery programmes
Warming climate has benefited the species in some northern areas while reducing habitat suitability in the south

Welfare Considerations

Pearl-bordered fritillary larvae that emerge in cool, shaded woodland without warm violet plants face developmental delays, predation, and starvation. The collapse of coppice management across England — once one of the most biodiverse woodland management systems — removed the warm, early-successional woodland habitat this species requires. Recovery projects that reinstate coppice management in key woodlands have produced some local recoveries, demonstrating that historical land management practices can be welfare-restorative. The challenge is economic: coppice management is labour-intensive and the market for coppice products (charcoal, hurdles, firewood) is insufficient to sustain widespread revival without conservation subsidy.

What You Can Do

Support woodland conservation organisations reinstating coppice management, including Woodland Trust and wildlife trusts
Participate in fritillary monitoring surveys run by Butterfly Conservation in May
Buy local coppice products — charcoal, wooden products — to support the economics of traditional management
Advocate for agri-environment payments for woodland management that benefits Priority Species
Visit pearl-bordered fritillary sites in spring to learn about the species and its habitat requirements
Submit records to the National Butterfly Recording Scheme to track population trends
Donate to Butterfly Conservation's recovery programmes for threatened woodland butterflies