CORA1.jpg

Photo Credit: Jason Slater Florida Fish and Wildlife Conservation Commission

Rafinesque's big-eared bat

Corynorhinus rafinesquii

Order: Chiroptera

Suborder: Yangochiroptera

Family: Vespertilionidae

Call characteristics:

Frequency modulated sweep (~20 kHz)

Body Length

3 1/2 in - 4 1/5

(9.2 – 10.6 cm)

Weight

  1/4 - 1/2 oz (7 - 13 g)

Rafinesque’s big-eared bats are easily identifiable throughout the southeastern U.S. by their extremely large ears and short snout with prominent lumps that flank the nostrils. The species' dorsal fur ranges from gray to reddish-brown, and its bicolored ventral fur has a dark base with pale or white tips that distinguish it from the closely-related Townsend's big-eared bat. This species is uncommon throughout most of its range, which spans across the southeastern U.S. and north into Illinois, Indiana, and Ohio. It is primarily found in mature forests, especially cypress/tupelo-gum stands. Rafinesque’s big-eared bats roost in trees, caves, bridges, and occasionally buildings. Winter habits of the species vary: individuals in cooler parts of the range often hibernate, while those in warmer climates are active throughout the year. Rafinesque’s big-eared bats feed mostly on moths but will also eat other insects including crane flies and horseflies. Females produce a single pup per reproductive cycle. The oldest recorded Rafinesque’s big-eared bat is 10 years old. Rafinesque's big-eared bats are one of a handful of low-intensity echolocation species colloquially referred to as "whispering bats."

Conservation Status

Canada Species at Risk
Mexico

Range

There are various sources for bat species range maps including IUCN, NatureServe, U.S. Fish and Wildlife Service ECOS, and the National Atlas of the United States (left). 

CORA2.jpg

Photo Credit: Kathleen Smith Florida Fish and Wildlife Conservation Commission

Status

&

Trends

NABat utilizes monitoring data provided by a broad network of partners to support regional and range-wide inferences about changes in the distributions and abundances of bat populations facing current and emerging threats.

Information used to populate this page was obtained from the following sources:

 

NatureServe Explorer

United States Fish and Wildlife Service Environmental Conservation Online System 

Bat Conservation International Bat Profiles

National Atlas of the United States. (2011). North American Bat Ranges, 1830-2008. National Atlas of the United States. Available at: http://purl.stanford.edu/pz329xp4277.

Taylor, M. 2019. Bats: an illustrated guide to all species. Washington, DC: Smithsonian Books.