Nick Upton / Harvest mouse (Micromys minutus) cleaning its nose on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June.

Dave Bevan / Harvest mouse (Micromys minutus) climbing on corn stalks, UK, July. Captive.

Dave Bevan / Harvest mouse (Micromys minutus) climbing a Thistle (Cirsium), UK, July. Captive.

Dave Bevan / Harvest mouse (Micromys minutus) grooming, sitting on a wheat seedhead, UK, July. Captive.

Dave Bevan / Harvest mouse (Micromys minutus) climbing up and chewing on a thistle (Cirsium) stem, UK, July. Captive.

Ross Hoddinott / Harvest mice (Micromys minutus) on grass stems, Devon, UK. July 2016. Captive.

Ingo Arndt / Harvest Mouse (Micromys minutus) using tail whilst climbing in reed, Germany, captive.

Ingo Arndt / Harvest Mouse (Micromys minutus) using tail whilst climbing in reed, Germany, captive.

Ingo Arndt / Harvest Mouse (Micromys minutus) nest, Germany.

Colin Varndell / Harvest mice (Micromys minutus) on teasel seed head. Dorset, UK, August. Captive.

Colin Varndell / Harvest mouse (Micromus minutus) climbing between ripe Wheat, Dorset, UK, July.

Nick Upton / Harvest mouse (Micromys minutus) on Common hogweed (Heracleum sphondylium) flowerhead after release, Moulton, Northampton, UK, June.