Dormouse – Muscardinus avellanarius
Dormice live at low population densities (one tenth as abundant as bank voles and wood mice in the same habitats).
Re-introductions of dormice are often suggested, but these require suitable (large) areas of woodland habitat and long periods of supplementary feeding. Breeding dormice in captivity is difficult and wild-caught animals are unlikely to be available in sufficient numbers. If fewer than 20 animals are released there is a high risk of failure. However, they have been success-fully reintroduced since 1992 to several counties (including Cheshire, Cambridgeshire, Derbyshire).