The Greater Mouse-Eared Bat in Britain: Status, Ecology and Prospects The Greater Mouse-Eared Bat (Myotis myotis) is Britain’s rarest mammal and one of its most remarkable conservation stories. Once thought lost from the country, it now survives — if only just — in tiny numbers. While widespread and secure across much of continental Europe, its British presence sits on the very edge of viability. Taxonomy and Identification The Greater Mouse-Eared Bat belongs to the large Myotis genus, often referred to as “mouse-eared bats” because of their relatively broad ears and pointed tragus. It is one of Europe’s largest insectivorous bats. Key identification features: • Forearm length typically 57–67 mm • Wingspan around 35–45 cm • Pale pinkish face with large ears • Grey-brown upper fur, paler underparts • Powerful build compared to most British bats Its size distinguishes it from all other native British species. Historical and Current Status in Britain The species historically br...
An Intimate Guide to British Wildlife