Hazel dormice
Hazel dormice are enigmatic and endearing. They are also threatened with extinction. Join us in helping to bring them back from the brink.
Dormice are hanging on mostly in southern parts of England and Wales. Our national monitoring shows the population has declined by half since 2000. Changes in woodland management, farming practices and loss of hedgerows have all taken a heavy toll on their living space, as well as climate change. We’re working hard to reverse the decline and promote recovery in British woodlands.
Read more below and download our leaflet about our Dormouse conservation and how you can help. We can also send you printed copies to display and distribute – just contact us here.
Read our current advice for monitoring dormice in the presence of SARS-CoV-2.
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State of Britain's Dormice report
Read our new report on Britain’s hazel dormice population and learn more about the latest threats
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About hazel dormice
Find out where dormice live, what they look like, the threats they face and FAQ’s
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Dormouse conservation
Discover how we’re helping the dormice we have left and reintroducing them where they’ve gone extinct
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Surveying and monitoring
Find out how we monitor dormice through regular surveying, and enter data online. Learn how to look for signs of dormice and enter one off sightings.
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Dormouse protection
Dormice are highly protected. Find out how to work with the species, the implications for development, and explore training resources
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Papers and publications
Read summaries of scientific papers on dormice and issues of The Dormouse Monitor