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BATS Magazine

VOLUME 7, NO. 4 Winter 1989

ON THE COVER. 1989-90

Hammer-headed bats (Hypsignathus monstrosus) are Africa's largest and perhaps most
unusual bats. Sometimes described as a "music box on wings," the hammer-headed bat's facial
structure is specialized to resonate noise from its equally specialized vocal cords. Adult males,
whose heads are greatly enlarged, sing loudly for a mate at special gathering places called

Calling starts shortly after dark with almost continuous singing for the first three or four hours of
the night. Females select mates based on their singing and display, which consists of a
characteristic fluttering of the wings. The bat shown here is an adult female. These rain forest
bats are important seed dispersers. PHOTO BY MERLIN D. TUTTLE

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All articles in this issue:
ON THE COVER. 1989-90
Landmark Legislation to Protect Flying Foxes
BCI to Host Pacific Island Flying Fox Conference
Flying Foxes in Melanesia: Populations at Risk
The Bats of Israel Yesterday and Today. 1989-90
The Workshop Experience: Learning to Study Bats
Spanish Educational Materials Available for Latin America
Colossal Cave A Year Later
Help for Little Brown Bats
BCI Members Get Involved in 1989
Help Celebrate Bats on Earth Day's 20-Year Anniversary!
Happy New Year from the BCI Staff

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