Re: Singleton Bats

["Dan Dugan" dandugan_1999]

Raimund Specht wrote:

>You might use my time-expanded recordings of Mexican Free-tailed bats
>that I made a few years ago at Bracken Cave in Texas:
>
>http://www.avisoft.com/sounds.htm#bats

Very nice! I recorded Mexican Free-tailed bats streaming out in the 
evening and diving back in in the morning at their northernmost brood 
cave in Northern California. I used MD, so my frequency response cut 
off at 16kHz.

The fly-out sound consisted of a roar of wingbeats, scattered flap 
sounds that I suspect might be wing-tip collisions, and an audible 
high-frequency chatter.

The high-speed return dives make dramatic zipping sounds.

-Dan Dugan