Michael Durham / Northern Long-eared Bat (Myotis septentrionalis) male flying, Cherokee National Forest, Tennessee, sequence 3 of 3

Michael Durham / Northern Long-eared Bat (Myotis septentrionalis) male flying, Cherokee National Forest, Tennessee, sequence 2 of 3

Michael Durham / Northern Long-eared Bat (Myotis septentrionalis) female flying, Cherokee National Forest, Tennessee

Michael Durham / Northern Long-eared Bat (Myotis septentrionalis) pregnant female flying, Cherokee National Forest, Tennessee

Michael Durham / Northern Long-eared Bat (Myotis septentrionalis) female flying, Cherokee National Forest, Tennessee

Joel Sartore / Photo Ark / Northern long-eared bat (Myotis septentrionalis), listed as vulnerable by IUCN, crawling at Nebraska wildlife rehabilitation centre, USA. Captivity.

Bruce Thomson / Desert long-eared bat (Otonycteris hemprichi), portrait, Sinai Peninsula, Egypt.

Bruce Thomson / Long-eared / Lappet-eared bat (Plecotus austriacus), portrait, Sinai Peninsula, Egypt.

Bruce Thomson / Pygmy long-eared bat (Nyctophilus walkeri) on tree trunk, Adelaide River, Northern Territory, Australia.

Bruce Thomson / Northern long-eared bat (Nyctophilus daedalus) gripping on to tree bark, Adelaide River, Northern Territory, Australia.

Bruce Thomson / Arnhem long-eared bat (Nyctophilus arnhemensis) on tree branch, Darwin, Northern Territory, Australia.