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Why the UK’s butterflies are booming in 2025

By Willow Neal, Postgraduate Researcher in Conservation Ecology, The Open University

Biodiversity is in rapid decline, across the UK and globally. Butterflies are excellent for helping us understand these changes. Where butterfly communities are rich and diverse, so too is the ecosystem. But the opposite is also true: if butterfly numbers are low and there are few species, it is a bad sign for the overall variety and abundance of life in the area.

Butterfly sightings were among the lowest…

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