Re: pressure build-up ring

["David Kuhn" dkuhn012001]

Many thanks Bill, that is very enlightening--I have a new window on 
the lives of these creatures. Can you refer me to a source of more on 
their utterances?
David



--- In  "werainey" <> 
wrote:
>
> Hi David,
> From the sound of it, that is a feeding buzz rather than a social 
call. As the bat gets closer to 
> a prey item, the individual calls are reduced in duration, the 
interval between them is 
> shortened  and intensity is decreased. Usually the minimum 
frequency rises as well. With 
> some bats there is a small gap at the end when the bat catches the 
insect, before the next 
> search phase call sequence is begun. 
> Bill R.
> >
> > Bernie, Bill, the files are in our Files section under Hawaiian 
Hoary 
> > Bat--
> > David
> >
>