Jussi Murtosaari / Daubenton's bat (Myotis daubentonii) hunting a mosquito. central Finland, June.

Solvin Zankl / Schreiber's long fingered bat (Miniopterus schreibersi) in flight in cave, Grotta Monte Majore, Sardinia, Italy. Highly commended, Mammals category, GDT 2012 competition.

Eric Medard / Bechstein's Bat (Myotis bechsteinii) in flight at night, mouth open to emit echolocating calls. France, Europe, September.

Eric Medard / Whiskered Bat (Myotis mystacinus) in flight low over water, drinking in flight. France, Europe, July.

Eric Medard / Bechstein's Bat (Myotis bechsteinii) in flight in cave. France, Europe, August.

Eric Medard / Lesser Mouse Eared Bat (Myotis blythii) in flight in cave. France, Europe, August.

Eric Medard / Kuhl's Pipistrelle Bat (Pipistrelle kuhlii) in flight low over water, with splash from drinking in flight. France, Europe, May.

Eric Medard / Western Barbastelle Bat (Barbastella barbastella) in flight low over water, mouth open to emit echolocating calls. France, Europe, July.

Eric Medard / Natterer's Bat (Myotis nattereri) flying low over water to drink, with long-exposure star-trails. France, Europe, July.

Dale Sutton / 2020VISION / Adult Daubenton's bat (Myotis daubentoni) flying over a weir, England, UK, September. 2020VISION Exhibition. Did you know? This species is know as the 'water bat', and catches insects from the water s...

Michael Durham / Western Long-eared Myotis (Myotis evotis) about to drink from a man-made guzzler, high-desert transition zone in the Deschutes National Forest, Oregon

Michael Durham / Silver-haired Bat (Lasionycteris noctivagans) illustrating wing movement during flight, Rogue River National Forest, Oregon, digital composite

Michael Durham / Yuma Myotis (Myotis yumanensis) bat, female pursuing a moth on the wing, Oregon

Michael Durham / Yuma Myotis (Myotis yumanensis) bat, male capturing a forest moth, Oregon

Michael Durham / Western Pipistrelle (Pipistrellus hesperus) bat flying over desert scrub, near Pine Creek in the John Day Fossil Beds National Monument, Clarno Unit, Oregon, this is the smallest bat found north of Me...

Michael Durham / Western Pipistrelle (Pipistrellus hesperus) bat chases a moth over desert scrub, near Pine Creek in the John Day Fossil Beds National Monument, Clarno Unit, Oregon

Michael Durham / Little Brown Bat (Myotis lucifugus) pursues a forest moth, the mouth is open to allow the bat to echolocate when a moth is caught, it is scooped up in the wing and then delivered to the mouth, digital...

Piotr Naskrecki / Dobson's Pipistrelle (Pipistrellus grandidieri) pair drinking, Gorongosa National Park, Mozambique

Piotr Naskrecki / Butterfly Bat (Glauconycteris variegata) drinking, Gorongosa National Park, Mozambique

Michael Durham / Hoary Bat (Lasiurus cinereus) male flying, Conasauga River, Chattahoochee-Oconee National Forest, Georgia

Chien Lee / Hardwicke's Woolly Bat (Kerivoula hardwickii) arriving at Pitcher Plant (Nepenthes hemsleyana) pitcher to roost, Brunei

Michael Durham / Pallid Bat (Antrozous pallidus) flying at night, Washington

Michael Durham / Pallid Bat (Antrozous pallidus) flying at night, Washington

Michael Durham / Eastern Big-eared Bat (Corynorhinus rafinesquii) flying at night, Big Thicket National Preserve, Texas

Nick Upton / Rehabilitated Brown big-eared bats (Plecotus auritus) flying in a flight cage, used to check they are able to hunt before they are released, North Devon Bat Care, near Barnstaple, England, UK, June. P...

Nick Upton / Brown big-eared bat (Plecotus auritus) flying into a mist net set in the entrance to Box Mine by the Wiltshire Bat Group, part of a population survey, Wiltshire, England, UK, September.

Nick Upton / Several bats (Myotis) circling around an old quarry face and the entrance to Box Mine during autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire...

Nick Upton / Panning shot showing several bats (Myotis) circling around an old quarry face and the entrance to Box Mine during autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed...

Nick Upton / Several bats (Myotis) circling around an old quarry face and the entrance to Box Mine during autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire...

Nick Upton / Several bats (Myotis) circling around an old quarry face and the entrance to Box Mine during autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire...

Nick Upton / Group of Bats (Myotis) circling in Box Mine during the autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire bat Group.

Nick Upton / Slow motion clip of Bats (Myotis) circling in Box Mine during the autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire bat Group.

Nick Upton / Slow motion clip of Bats (Myotis) circling in Box Mine during the autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire bat Group.

Nick Upton / Slow motion clip of Bats (Myotis) circling in Box Mine during the autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire bat Group.

Nick Upton / Bats (Myotis) circling in Box Mine during the autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire bat Group.

Nick Upton / Three Bats (Myotis) circling in Box Mine during the autumn swarming period, Wiltshire, England, UK, September. Recorded during a licensed survey with Wiltshire bat Group.

Nick Upton / Member of Wiltshire Bat Group extracting a small Bat (Myotis) from a mist net set in woodland, Box Mine, Wiltshire, England, UK, September. Model released.

Nick Upton / Member of Wiltshire Bat Group extracting a Daubenton's bat (Myotis daubentonii) from a mist net set in woodland, Box Mine, Wiltshire, England, UK, September. Model released.

Nick Upton / Daubenton's bat (Myotis daubentonii) flying into a mist net during an autumn swarming survey by the Wiltshire Bat Group, Box Mine, Wiltshire, England, UK, September. Model released.

Nick Upton / Natterer's bat (Myotis nattereri) flying into a harp trap set during an autumn swarming survey undertaken by members of Wiltshire Bat Group, Box Mine, Wiltshire, England, UK, September. Model released...

Bruno D'Amicis / Vespertilionid bats flying at dusk among centuries-old trees in old-growth Beech (Fagus sylvatica) forest. Abruzzo, Lazio and Molise National Park / Parco Nazionale d'Abruzzo, Lazio e Molise UNESC...

Adrian Davies / Serotine bat (Eptesicus serotinus), detail of fifth finger on outstretched wing. Captive, injured animal. UK. May.

Adrian Davies / Serotine bat (Eptesicus serotinus) on tree. Captive, injured animal in rehabilitation UK. May.

Nick Upton / Daubenton's bat (Myotis daubentonii) migrant hunting in daylight for aquatic insects over coastal grassland, Matsalu Bay, Haeska, Estonia, September.

Nick Upton / Daubenton's bat (Myotis daubentonii) migrant hunting in daylight for insects on water surface of a tidal creek, Matsalu Bay, Haeska, Estonia, September.

Naskrecki & Guyton / Rufous mouse-eared bat (Myotis bocagii) in flight, against white background, Mozambique.

Naskrecki & Guyton / Photographer and ecologist Jen Guyton holding a Welwitsch's bat (Myotis welwitschii) showing the wing, Mozambique. May 2015. Model released.

Naskrecki & Guyton / Rufous mouse-eared bat (Myotis bocagii) roosting upside down with baby, against white background, Mozambique.