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Yosemite clip for ID

Subject: Yosemite clip for ID
From: "Dan Dugan" dandugan_1999
Date: Sat May 24, 2008 9:24 am ((PDT))
Re: <http://ad2004.hku.nl/naturesound/dandugan/NS080329 Middle Brother Dawn for 
ID.mp3 
 >

Recorded March 29, 2008, at dawn by the Middle Brother cliffs off  
Northside Drive in Yosemite National Park. Severely band-pass filtered  
2K-5K.

Behind the screeching jays (Stellar's?) are two rattling calls. One  
centers around 2.4KHz, the other, more tonal, around 2.7KHz. Can  
anyone identify the species? Is the more tonal call a frog? Between  
here and the Merced river I think I heard three calls with the same  
rhythm but different species.

Is rattle the right word? How do birders describe this kind of rapid- 
repeating call?

-Dan Dugan



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