From the BBC:
One of Britain’s rarest butterflies has returned to a spot where it has not been seen for more than 40 years.
The Adonis Blue, classified as a priority species, is usually only found at a few places in southern England.
But it has returned in numbers to a former site in the Cotswolds, Gloucestershire, after a National Trust campaign to restore its habitat.
The insect’s numbers were decimated 50 years ago when a lot of its natural habitat, chalk grassland, was lost.
Åland islands: Glanville fritillary butterfly.
October 2010: Record numbers of marsh fritillary butterfly webs have been counted this month at Devon Wildlife Trust‘s Volehouse Moor nature reserve in north Devon. This success follows intensive work at the north Devon site: here.
Almost 4,000 marsh fritillary caterpillars were distributed on suitable habitat by Wild Ennerdale Volunteers, Forestry Commission staff and Butterfly Conservation under a licence from Natural England: here.