The Northern Myotis is a medium-sized bat with dark brown fur on its back and paler fur on its underside. It is very similar in colour and size to the Little Brown Myotis, but the ears are longer (extend beyond the nose when pressed forward) and the tragus (fleshy projection that covers the entrance of the ear) is long, slender and pointed. Sometimes the Northern Myotis and Little Brown Myotis use the same roosts or hibernacula and it is difficult to tell the species apart. The Northern Myotis used to be called the northern long-eared bat.
Wingspan: 23 to 27 cm (9 to 11 in), Weight: 6 to 9 g (0.2 to 0.3 oz).
Report Northern Myotis sightings to WildlifeObs@gov.nt.ca.