Re: pressure build-up ring

["werainey" 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 Hoary 
> Bat--
> David
>