Kim Taylor / Brown Long-eared bat (Plecotus auritus) drinking from a lily pond , Surrey, UK. Overall WINNER of the Audubon Society of Greater Denver ‘Share the View’ competition 2011

Stephen Dalton / Long-eared bat {Plecotus auritus} flying through meadow, UK

Kim Taylor / Long-eared bat (Plecotus auritus) in flight. Time-lapse. Captive, UK

Dietmar Nill / Long eared bat hunting at night {Plecotus auritus} Germany

Dietmar Nill / Long eared bat flying through barn window, Germany

Hans Christoph Kappel / Long Eared Bat flying at night, Germany.

Hans Christoph Kappel / Long Eared Bat in flight. Germany.

Hans Christoph Kappel / Long Eared Bat flying at night

Hans Christoph Kappel / Long eared bat flying at night, Germany

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

Eric Medard / Brown big eared bat (Plecotus auritus) flying at night, reflected in water, Normadny, France, July.

Doug Gimesy / Lesser long-eared bat (Nyctophilus geoffroyi). Rescued animal photographed under controlled conditions. Victoria, Australia.

Doug Gimesy / Lesser long-eared bat (Nyctophilus geoffroyi). Rescued animal being held by wildlife carer. ?Captive, photographed under controlled conditions. ??North Melbourne, Victoria, Australia.?

Eric Baccega / Bat-eared fox (Otocyon megalotis). Beauval Zoo Parc, France. Captive.

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.

Eric Medard / Long eared bat (Plecotus austriacus) flying in garden taken with infrared light at night. France, May.

Eric Medard / Long eared bat (Plecotus austriacus) flying in garden taken with infrared light at night. France, May.

Nick Upton / Rescued, abandoned Brown long-eared bat pup (Plecotus auritus) eating a waxworm, North Devon Bat Care, Barnstaple, Devon, UK, August. Model released

Nick Upton / Samantha Pickering holds a rescued, abandoned Brown long-eared bat pup (Plecotus auritus) as it eats a waxworm she has fed it, North Devon Bat Care, Barnstaple, Devon, UK, August. Model released.

Nick Upton / Samantha Pickering holds a rescued, abandoned Brown long-eared bat pup (Plecotus auritus) as it eats a waxworm she has fed it, North Devon Bat Care, Barnstaple, Devon, UK, August. Model released.

Nick Upton / Samantha Pickering grooming a rescued Brown long-eared bat pup (Plecotus auritus) with a small brush after hand feeding it, North Devon Bat Care, Barnstaple, Devon, UK, August. Model released

Nick Upton / Samantha Pickering grooming a rescued Brown long-eared bat pup (Plecotus auritus) with a small brush after hand feeding it, North Devon Bat Care, Barnstaple, Devon, UK, August. Model released

Nick Upton / Brown long-eared bat pup (Plecotus auritus) being groomed with a small brush as it eats a waxworm, North Devon Bat Care, Barnstaple, Devon, UK, August. Model released

Paul D Stewart / Long eared bat (Plecotus sp.) with original hand colour, from Bechstein 'Getreue Abbildungen Naturhistorischer', 1796.

Nick Upton / Samantha Pickering watching a rescued Brown long-eared bat (Plecotus auritus) flying around her flight cage as she checks it's ability to hunt prey on the wing before release back to the wild, North D...

Nick Upton / Samantha Pickering watching a rescued Brown long-eared bat (Plecotus auritus) flying around her flight cage as she checks it's ability to hunt prey on the wing before release back to the wild, North D...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) with an injured ear flying in a flight cage, having its recovery and ability to capture insects on the wing tested before release back to the wild,North...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) held in a hand, about to have its recovery and ability to fly tested in a flight cage before release back to the wild, North Devon Bat Care, Barnstaple,...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) flying in a flight cage eating a moth it has caught, having its ability to capture insects on the wing tested before release back to the wild, North Dev...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) flies from a hand as it has its ability to fly tested in a flight cage before release back to the wild, North Devon Bat Care, Barnstaple, Devon, UK, Jun...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) resting in a flight cage after landing, having its recovery and ability to capture insects on the wing tested before release back to the wild,North Devo...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) flying in a flight cage eating a moth it has caught, having its ability to capture insects on the wing tested before release back to the wild, North Dev...

Nick Upton / Rescued Brown long-eared bat (Plecotus auritus) resting in a flight cage after landing, having its recovery and ability to capture insects on the wing tested before release back to the wild,North Devo...

Nick Upton / Samantha Pickering opening a bat box within a flight cage at dusk to encourage a rescued Brown long-eared bat (Plecotus auritus) out so that its ability to fly can be tested before release back to the...

Nick Upton / Samantha Pickering prepares to feed a mealworm to a Brown long-eared bat (Plecotus auritus) at a public engagement event, alongside her daughter dressed as a bat, Boscastle, Cornwall, UK, October 2015...

Nick Upton / Samantha Pickering carefully washing a Brown long-eared bat (Plecotus auritus) after peeling off the flypaper it was stuck to, Barnstaple, Devon, UK, October 2015. Model released.

Nick Upton / Samantha Pickering with a Brown long-eared bat (Plecotus auritus) that was brought to her rescue centre that she has just successfully separated from the flypaper it was badly stuck to, Barnstaple, De...

Nick Upton / Samantha Pickering uses a pipette to give water to a Brown long-eared bat (Plecotus auritus) stuck to flypaper as the member of the public who brought it in looks on, Barnstaple, Devon, UK, October 20...

Nick Upton / Samantha Pickering holding a Brown long-eared bat in her bathroom (Plecotus auritus) that she has just successfully separated from the flypaper it was badly stuck to in her bathroom, North Devon Bat C...

Nick Upton / Samantha Pickering carefully removing flypaper from a Brown long-eared bat (Plecotus auritus) that was brought to her rescue centre stuck to it, Barnstaple, Devon, UK, October 2015. Model released.

Nick Upton / Brown long-eared bat (Plecotus auritus) with a wing damaged when the bat became stuck to flypaper, inspected by Samantha Pickering at the bat rescue centre at her home, Barnstaple, Devon, UK, October...

Nick Upton / Brown long-eared bat (Plecotus auritus) wing held open by Samantha Pickering at a public outreach event, Boscastle, Cornwall, UK, October 2015. Model released.

Nick Upton / Samantha Pickering carefully washing a Brown long-eared bat (Plecotus auritus) after peeling off the flypaper it was stuck to, Barnstaple, Devon, UK, October 2015. Model released.

Nick Upton / Samantha Pickering washing a Brown long-eared bat (Plecotus auritus) that was brought to her rescue centre stuck to flypaper in a bathroom sink to help free it, Barnstaple, Devon, UK, October 2015. Mo...

Nick Upton / Samantha Pickering carefully holding a Brown long-eared bat (Plecotus auritus) brought to her by a member of the public, Barnstaple, Devon, UK, October 2015. Model released.

Nick Upton / Brown long-eared bat (Plecotus auritus) shown to two children and their father by Samantha Pickering at a public outreach event, Boscastle, Cornwall, UK, October 2015. Model released.