Some species have broken all records in the extent to which they have pushed forward their normal appearance dates: the Lulworth skipper, which usually makes its first appearance in the third week of June, was seen as early as April 28 while the speckled wood, which typically appears at the end of March, was observed in its Cornwall habitat on January 16, a record seven weeks ahead of schedule.
Overall, the Butterfly Conservation estimates that these butterfly species emerged more than four-and-a-half weeks earlier on average than they would've done ten years ago. The organization's officials are certain that climate change is linked to the early appearance of the majority of Britain's butterflies.
"Butterfly data, collected by hundreds of UK recorders, definitely points to climate change," Mr Warren said. "Species are not only emerging early, but several species are extending their geographic range northwards. The small skipper, the comma and the holly blue butterflies have all crossed the border into Scotland in the past few years, very probably as a result of the changing climate."
::Early arrival of butterflies demonstrates impact of climate change