On Monday, September 17, 2012 2:39:55 PM UTC-4, Rob Ostrowski wrote:
> While visiting the National Zoo for a friend's work event on Saturday, I was surprised to hear a Common Raven croaking from atop an oak tree near the seal tanks.I made a (bad) recording, using my cell phone and uploaded it here: http://soundcloud.com/pgbird85/common-raven-national
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> I marked the spots on the spectrogram when you can hear the Raven. The rest of the recording are the sounds of people enjoying the zoo.
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> Rob Ostrowski
> Bowie, MD
Hi Rob, sorry to be a downer, but it is likely you were hearing the captive ravens on the America's Trail exhibit. There are 4 of them. They fooled me too when the zoo first acquired them...
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