Who we are
We’ve been standing up for wildlife for over 40 years. With the help of scientists, conservationists, landowners, and the general public, we’re working to protect our delicately balanced ecosystem by bringing our most threatened species back from the brink.
Where we work
Funded by our generous supporters, our grant programmes support the very best scientific researchers and wildlife experts out in the field. The evidence they unearth guides worldwide conservation. Browse the map below to discover the amazing wildlife we’re saving from extinction.
Returning dormice to the wild
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Latest news from PTES
Leicestershire welcomes county’s only known population of rare hazel dormice
Returning dormice to Leicestershire This week, we’ve reintroduced over 20 rare hazel dormice into a secret woodland location in Leicestershire, creating the county’s only known population of the tiny mammals. This is a landmark conservation effort which will bring rare hazel dormice back to an area where they once existed. This summer’s release builds on …
Celebrating the 10th anniversary of the National Water Vole Monitoring Programme
2025 marks a decade of the National Water Vole Monitoring Programme (NWVMP) – a huge milestone for the UK’s largest citizen science survey dedicated to water voles. Over the past decade, thousands of volunteers have submitted records of water voles from more than 2,200 sites nationwide. To everyone who has taken part: thank you. Whether …
The surprising versatility of dormice: rethinking habitat specialisation
Many species that are habitat specialists – organisms that rely on specific environments or food sources – are declining in what is becoming a worrying trend. One such specialist facing this threat is hazel dormice (Muscardinus avellanarius), a species intimately linked with certain woodland habitats. Dormouse populations in Britain have plummeted by a staggering 78% …