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Long-eared Bat (Myotis evotis)

Long-eared Bat


  • Medium sized, with a total body length ranging from 8.3 to 11 centimetres (3 ¼ to 4 ¼ inches).
  • Wingspan is about 28 centimetres (11 inches).


  • The long-eared bat (sometimes called the 'long-eared myotis') as the name implies, is characterized by long black ears which extend well beyond the tip of the nose when gently laid forward.
  • Is a western species restricted largely to mountainous regions, although a few colonies have been found in the prairies (for example, at Hesketh, Alberta).
Natural History


  • Preferred habitat appears to be coniferous cover high in the mountains of British Columbia and Alberta.
  • These bats probably roost in trees in the summer but individuals collected for scientific study in Alberta usually are collected at caves in the fall.
  • Some of these bats swarm at Cadomin Cave in August.


  • Diet includes beetles, flies and moths.
Reproduction and Growth

Breeding Behaviour

  • Nursery colonies consist of 12 to 30 individuals.
  • Each female bears a single young each year. The winter habits of the species are unknown.
Conservation and Management


The long-eared bat is classified as Secure in the current General Status of Alberta Wild Species report. See:


Page Information

Updated: April 29, 2009