Hi Dan,
Interesting recording.
I might be way off, but the more tonal calls sound like Northern
Flickers - I think there are two of them. The harsher rattles, sound
like several more jays (Gray or Stellar)reacting mockingly to the
flicker calls.
John Hartog
--- In Dan Dugan <> wrote:
>
> 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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