Bat sounds.

["Stuart Fairbairn" <>]

Somewhere in the archives there is a recording of the echo location sound u=
sed by a bat in persuit of prey. The repitation rate increases as the bat c=
loses on the prey. The recording has been modified to bring the sound with =
in human hearing.

Do bats have other frequency calls for bat to bat communication or is the e=
cho location frequency specific to the species? Perhaps the size and shape =
of the resinator in the bat's head sets the frequency. If so, then communic=
ation might be by pulse rate variation.

Would Graham care to comment?

Stuart.

[Non-text portions of this message have been removed]



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