Big Butterfly Count lowest in 14 years

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Big Butterfly Count lowest in 14 years

data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==Andrew Cooper, Butterfly Conservation

The small tortoiseshell butterfly has suffered its worst year on record in the count

A wildlife charity has declared a national “butterfly emergency” after its annual Big Butterfly Count recorded its lowest ever numbers.

The count has been running for 14 years. This year’s poor results are partly down to the wet weather but the long-term trend is hugely concerning, says Butterfly Conservation.

It is calling on the government to ban pesticides that can harm butterflies and bees “before it’s too late”.

Butterflies are at “their lowest ebb” on the back of 50 years of decline, said the charity’s head of science, Dr Richard Fox.

“Butterflies are a key indicator species; when they are in trouble we know that the wider environment is in trouble too,” he said.

Neonicotinoid pesticides were banned in the *** in 2018

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to tackle a virus that attacks sugar beet.

A spokesperson from the Department for Environment Food and Rural Affairs said it was “committed to deliver for nature and will change existing policies, including banning the use of those neonicotinoid pesticides that threaten vital pollinators” – but has given no time scales for doing so.

data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==Andrew Cooper, Butterfly Conservation

Numbers of the green-veined white butterfly have crashed over 14 years

The 2024 Big Butterfly Count took place in July and August across the *** when thousands of people recorded over a ******* of 15 minutes how many butterflies they saw, even if it was none.

Overall, participants spotted seven butterflies on average per count, the lowest in the scheme’s 14-year history. Last year’s average was 12.

Butterfly Conservation said it was the worst year recorded for the common blue, holly blue, green-veined white, small white, small tortoiseshell, painted lady and Scotch argus.

data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///ywAAAAAAQABAAACAUwAOw==Andrew Cooper, Butterfly Conservation

The painted lady has fared well in previous years but did badly this summer, according to the count

This year’s fall in butterfly numbers is thought to have been made worse by the wet spring coupled with the late arrival of summer heat.

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– one of the longest running insect monitoring schemes in the world – shows yearly fluctuations in butterfly numbers in response to weather conditions amid a long-term picture of decline driven by climate change, habitat loss, pollution and pesticides.

Dr Marc Botham of the *** Centre for Ecology and Hydrology said 33% of species had shown a significant decline in their abundance on monitored sites in the *** over the past 48 years.

“It’s quite simple really – there’s not enough habitat and what is there isn’t good quality,” he said.

“We need to be putting [measures] in place to increase the amount and quality of habitat so that [butterflies and other wildlife] can do better.”

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