Nick Upton / Mammalogist Gill Brown inspecting nest box set out for Common / Hazel dormice (Muscardinus avellanarius), in coppiced woodland near Bristol, Somerset, UK, October. Model released. Winner of the Doc...

Nick Upton / Mammalogist Gill Brown of Backwell Enviroment Trust using a spring balance to weigh a Common / Hazel dormouse (Muscardinus avellanarius) held in a plastic bag during a survey in coppiced woodland near...

Nick Upton / Mammalogist Gill Brown of Backwell Enviroment Trust finding a Common / Hazel dormouse (Muscardinus avellanarius) in a nest box in coppiced woodland near Bristol, Somerset, UK, October. Model released.

Nick Upton / 2020VISION / Mammalogist Emma Koblizek inspects a small mammal caught in a Longworth trap tipped into a temporary holding box during Abbots Pool and woodland reserve Bioblitz, Bristol, UK, June 2012. Model release...

Nick Upton / 2020VISION / Volunteer Shen Yan Liow looks on as mammalogist Gill Brown matches up inky hedgehog footprints left in a footprint tunnel with identification chart during Arnos Vale Cemetery Bioblitz, Bristol, UK, Ma...

Nick Upton / 2020VISION / Volunteer Shen Yan Liow looks on as mammalogist Gill Brown matches up inky hedgehog footprints left in a footprint tunnel with identification chart during Arnos Vale Cemetery Bioblitz, Bristol, UK, Ma...

Nick Upton / 2020VISION / Volunteer Shen Yan Liow looks on as mammalogist Gill Brown refers to a mammal footprint identification chart during Arnos Vale Cemetery Bioblitz, Bristol, UK, May 2012 Model released.

Nick Upton / 2020VISION / Member of the public trying to identify the skull of a badger (Meles meles) held up by mammalogist Gill Brown during Arnos Vale Cemetery Bioblitz, Bristol, UK, May 2012

Nick Upton / 2020VISION / Members of the public and volunteers gathered to inspect mammal skulls and footprint casts shown by mammalogist Gill Brown during Arnos Vale Cemetery Bioblitz, Bristol, UK, May 2012

Roland Seitre / Cookie Sims, mammalogist, examining jewelry made from Indian bear claws at the National Fish and Wildlife Forensics Laboratory, Ashland, Oregon, USA

Roland Seitre / Cookie Sims, mammalogist, examining jewelry made from Indian bear claws at the National Fish and Wildlife Forensics Laboratory, Ashland, Oregon, USA

Tim Laman / Rat (Leptomys sp ?). Possible new species held by Foja Mountains RAP Expedition mammalogist Kris Helgen. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation International Rapid Assessme...

Tim Laman / Foja Mountains RAP Expedition mammalogist Kris Helgen checks a small mammal trap near the 1200 m Lower Camp. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation International Rapid Asse...

Tim Laman / Foja Mountains RAP expedition ornithologist Chris Milensky and mammalogist Kris Helgen work in the prep tent preparing specimens late into the night. 1200 m Lower Camp. Foja Mountains, Papua, Indones...

Tim Laman / Dorcopsis (Dorcopsulis sp. nov.). Foja Mountains RAP expedition mammalogist Kris Helgen holding a new species of wallaby he has discovered. Papua, Indonesia, 2008. (taken during Conservation Internati...