Green campaigns from Kent to the Wild Landes of Scotland, butterflies have been part of the British natural decor for centuries. But behind this familiar image hides a much more fragile reality. In the space of a few decades, the populations of butterflies in the United Kingdom have collapsed, victims of a slow but constant decline that even the most common species no longer manage to avoid. While the statements “accumulate and the figures worsen, it is a whole part of the living that seems to disappear silently from the landscapes.
A collapse started almost 50 years ago
Since 1976, thousands of volunteers have scanned butterflies on more than 3,000 sites across the United Kingdom as part of the UK Butterfly Monitoring Scheme. This unique program in the world, coordinated by Butterfly Conservation, the UK Center for Ecology & Hydrology, the British Trust for Ornithology and the Nature Conservation Committee, allows you to accurately monitor the evolution of species.
The results are final. According to the latest analyzes relayed by BBC, 31 of the 59 species of butterflies observed display a long -term decline. Among them, some suffer from dizzying declines. The little turtle butterfly, formerly very widespread, saw its workforce collapse by 86% in almost five decades. Even leaves for the turnip of turnip, whose population has dropped by 28% since the start of the program.
This dynamic is not linked to a punctual phenomenon. The Guardian recalls that the decline concerns both rare species and common butterflies living in parks or gardens, such as common blue or myrtil. These formerly familiar species disappear from British landscapes at a disturbing pace.
The year 2024 marks a turning point in the fall in the workforce
The past year turned out to be particularly dark. According to data, 2024 ranks like the fifth worst year for butterflies since the start of the surveys. Only six species have shown an improvement in their workforce compared to 2023, compared to 51 in decline.
Nine species have even experienced their worst year recorded, including the small turtle, the common copper, the gray skipper or the azure of the chalk hills. These results, detailed by BirdGuides, also concern species which are well established in the British rural landscape, which underlines the extent of the phenomenon.
The weather of the year has not helped. The wet spring and relatively fresh summer limited the reproduction and survival of insects. But this punctual factor is not enough to explain the collapse. Butterflies already weakened by the loss of their habitats are now too vulnerable to withstand climatic hazards, which have become more frequent with climate change.
How to stop the disappearance of butterflies in the United Kingdom
Faced with this situation, calls for action are increasing. Butterfly Conservation even declared a “national emergency” for butterflies. For Dr. Richard Fox, the gradual disappearance of these emblematic insects is explained above all by human activities. Pollution, intensive use of pesticides, rampant urbanization and soil artificialization have transformed ecosystems.
But solutions exist. Research relayed by Country Living has shown that a simple gesture like letting the grass push in its garden can considerably increase the number of butterflies observed. Encourage nectarifers plants, ban pesticides, vary the floral species … so many actions within everyone's reach.
On a collective scale, scientists also call on local authorities to review their practices. Fewer mowing, more spaces left in its natural state. These adjustments can have immediate positive effects, including urban areas.
With an unwavering passion for local news, Christopher leads our editorial team with integrity and dedication. With over 20 years’ experience, he is the backbone of Wouldsayso, ensuring that we stay true to our mission to inform.
