What Happens to Bats in the Pacific Northwest Winter?

closeup of bat face
Hoary bat. Photo by Daniel Neal/Creative Commons Attribution 2.0 Generic license.
bats hanging upside down on ceiling of cave
Townsend’s big-eared bats hibernate together in cave in Washington. Photo by Abby Tobin/WDFW.
2 photos of single bat upside down in cave
Big brown bat and little brown bat hibernating in cave in Washington. Photo by: Shawn Thomas/WDFW (left) and Abby Tobin/WDFW (right).
2 pics show monitoring posts
Acoustic monitoring posts in Washington. Photos by Abby Tobin/WDFW.
bat on a gloved hand with antenna coming out of back
Little brown bat with radio transmitter being tracked to locate hibernacula in Washington. Photo by Abby Tobin/WDFW.
bat with WNS
Bat in hibernation with white-nose syndrome. Photo by USFWS.

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U.S. Fish and Wildlife Service

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