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Re: pressure build-up ring

Subject: Re: pressure build-up ring
From: "David Kuhn" dkuhn012001
Date: Mon Nov 10, 2008 12:05 pm ((PST))
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?

--- In  "werainey" <> 
> 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 
> > Bat--
> > David
> >

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