National Trust to create UK sanctuary for endangered butterfly

Heddon Valley in Devon to be haven for high brown fritillary, supported by lottery funding

A beautiful wooded valley on the Devon coast is to be the focus of a project to save the UK's most endangered butterfly - the high brown fritillary.

Conservationists believe changes to woodland management, such as the abandonment of coppicing, and climate change have contributed to the steep decline of the large, powerful, fast-flying butterfly over the last 50 years.