The BBC reports
The warm start to 2014 boosted the number of some butterflies, including the critically endangered High Brown Fritillary, a survey has found.
More than half of 56 species studied saw their numbers rise compared with the previous year, according to the UK Butterfly Monitoring Scheme.
The High Brown Fritillary also benefited from schemes to restore habitat, said Butterfly Conservation.
Read story at Endangered butterfly species records 10-year high – BBC News.
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