The critically-endangered high brown fritillary saw numbers fall by 46% compared with 2011, and the endangered heath fritillary saw numbers halve.

BBC: Butterflies suffered in cold and wet 2012, says charity

More than 60% of the 3, 000 species surveyed have declined over the last 50 years, including some much loved and familiar plants and animals like the lesser spotted woodpecker, the hedgehog, the natterjack toad and the High Brown Fritillary and Wood White butterflies.

BBC: Stark warning over the state of nature