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BATS Magazine

VOLUME 12, NO. 4 Winter 1994


ON THE BACK

IN LATE SUMMER, big brown bats (Eptesicus fuscus) begin fattening up in preparation for hibernation, storing about a third of their body weight in fat— adequate to last until spring as long as they are not disturbed too frequently. These bats are hardier than most species in winter and often roost in cave or mine entrances in sub-freezing temperatures. Their body temperatures may fall as low as 29 degrees Fahrenheit. Males commonly form tight clusters, but females are most likely to hibernate alone, especially in warmer regions.

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All articles in this issue:
ON THE COVER
Conservation Initiatives Ensure Continued Progress
You can help
A Binational Partnership to Protect Mexican Free-tailed Bats
THE MAGIC OF MULU
A Model for Conservation and Education
BCI Field-Study Workshops Expand to Pennsylvania
COSTA RICA ADVENTURE
Join Us in Costa Rica for Another Adventure
Research Begins on Bat Friendly Bridge Designs
Student Scholarship Program Expanded
Annual Report Available
ON THE BACK

Unless otherwise noted, all images are copyright ©Merlin D. Tuttle and/or ©Bat Conservation International