Little Brown Bat
(Little Brown Myotis)
(Click on the image to see a larger image)
Photo © Merlin Tuttle
Description: Wingspans ranging from 8” to 11”. Largest have a 2” body, 1 5/8” tail. Weighs an average of 7 grams, approximately a nickel’s weight. Little Browns eat many pest insects - mosquitoes, gnats, crane flies, wasps, moths—and usually feed on or near water. One banded Little Brown was captured 34 years later.
Spring/summer: At Woodard Bay about 30% of the pregnant female bats roosting there under the railroad trestle are Little Browns. Most of these migrate every night to Capitol Lake to feed, joining other Little Browns coming along the other two known “bat highways” to the lake. Female Little Brown Bats also roost in various buildings and occasionally in large, dead trees throughout Thurston County. Males tend to be in higher altitude forested areas.
Fall/winter: Migrates to unidentified winter hibernation sites, probably to higher and colder areas within a couple hundred miles of Thurston County.