This video is called Evening Primrose Flowers.
From British daily The Independent:
Conservationists to spend £1m in bid to save endangered butterflies
By Michael McCarthy
Published: 21 July 2007
Nearly a million pounds is to be spent on a last-ditch effort to save three of Britain’s most rapidly declining butterflies.
The project to help the pearl-bordered and small pearl-bordered fritillary and the Duke of Burgundy butterflies, all at severe risk of dying out in southern England, is the most expensive butterfly conservation effort ever in the UK.
It is aimed at restoring the proper woodland management that the three species depend on. All need sunny rides and glades to allow their food plants to flourish – violets for the fritillaries and primroses for the Duke of Burgundy.
Butterflies in Britain: here.
Second brood of Duke of Burgundy butterflies raises hopes for species survival: here.