Smithsonian National Museum of Natural History, North American Mammals
Search the Archive

  Chiroptera · Vespertilionidae · Myotis leibii
  Smithsonian Institution
  Copyright Notice
  Privacy Notice
 
Myotis leibii

Eastern Small-footed Myotis

Order: Chiroptera
Family: Vespertilionidae

Image of Myotis leibii
Click to enlarge. (74 kb)

Conservation Status: Least Concern.


The eastern small-footed myotis is one of the smallest North American bats. It has a limited range, occurring only in eastern deciduous and coniferous forests. This bat tolerates colder temperatures than many bats, entering hibernation later than many (November to December) and leaving it rather early (in March). It has a slow, erratic flight that is characteristic and can be used to help identify the species. Rather remarkable for a mammal of such small size, this bat is known to live to 12 years. By comparison, most small rodents and shrews live only about 18 months or less.

Also known as:
Small-footed Myotis, Least Myotis, Leib's Myotis

Length:
Range: 73-82 mm

Weight:
Range: 3-7 g

References:

Audubon, J. J., and J. Bachman, 1842.  Descriptions of new species of quadrupeds inhabiting North America, p.284.  Journal of the Academy of Natural Sciences of Philadelphia, series 1, 8:280-323.

Links:

Mammal Species of the World

Mammalian Species, American Society of Mammalogists' species account

Distribution of Myotis leibii

Image of Myotis leibii
Click to enlarge. (168kb)