The Trust says it is now "concerned over what has happened to these wild animals". The Hazel Dormouse (Muscardinus avellanarius) is a small mammal. However, there have been many efforts to bring it … The hazel dormouse, the only kind native to Britain, is a protected species and efforts are already underway to boost its numbers. Their weight is between 15 and 30 grams. This will help us increase our knowledge of this endangered species and how to protect them. Only hazel dormouse nests were left inside - with no sign of the endangered creatures. The sanctuary in Herne, near Canterbury, hopes to reintroduce hazel dormice into the English countryside to boost its population following the birth of a litter of pups.. A threatened dormouse breed could soon be on the up at the Wildwood Trust. Hazel Dormice are protected by UK and the EU legislation and are one of the UK’s most endangered mammals. If you have a one-off sighting or sign of a hazel dormouse please tell us about it in the form below. The hazel dormouse population has decreased in the UK by 75% over the last 25 years. The four baby dormice, two male and two female, are now … UK conservation charity People’s Trust for Endangered Species marks the 30 th anniversary of its National Dormouse Monitoring Programme (NDMP) this year – the longest-running small land mammal survey in the world.. The State of Britain’s Dormice report, published by wildlife charity People’s Trust for Endangered Species (PTES), shows that hazel dormice numbers have declined by 38% since 2000, and 55% … The Hazel Dormouse is 6 – 9 centimetres long with a tail of 5.7 – 7.5 centimetres. The Hazel Dormouse is the only living member of the genus Muscardinus. Thank you. The hazel dormouse population is now down to around 45,000 and has become extinct in seven counties in north and east England. Endangered hazel dormouse population 'given a boost' Another 20 breeding pairs of hazel dormice are being released in the wild as part of a nationwide species recovery programme in England. It is an offence to deliberately capture, injure or kill them or to damage, destroy, disturb or obstruct their resting place. PTES' State of Britain’s Dormice 2016 report confirmed that hazel dormice not only went extinct from 17 English counties since the end of the 19 th century, but that recent records reveal populations have probably fallen by a … Little is known about their social organisation, … Established in 1990 to monitor how the UK’s hazel dormouse populations are … If you have any problems or questions about your entry please call us on 020 7498 4533 or email susan@ptes.org. The Great Nut Hunt enlists the help of the public to ferret out gnawed nuts to determine the distribution and numbers of this rare woodland mammal. 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