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Help with a couple of mysteries

Subject: Help with a couple of mysteries
From: "Tom Williams" pterodax
Date: Sat Dec 18, 2010 5:18 am ((PST))
Hi all,

Here's a couple of puzzles for anyone with time on their hands this weekend.

The first was passed to me by my father for identification - I think he 
recorded it on his mobile phone, which just goes to show that almost everyone 
is now carrying recording devices capable of capturing sounds of good enough 
quality for identification purposes!

It was recorded a couple of days ago in woodland on one of the lowland heaths 
in East Devon. He believes the bird was up in the trees, although he couldn't 
see it, and it called repeatedly for around 5 minutes. Neither he nor I has 
ever heard anything quite like it - at a guess I'd say it was some kind of 

The second sound is one of my recordings. I made it on the 10th December at 
around 2,000m on the northern slopes of Mount Teide on Tenerife in the Canary 
Islands. The bird was quite a long way off and I was using the built-in mics on 
my LS-10, so I had to do some filtering to raise the call above the background 
noise. The terrain was best described as high-altitude desert - volcanic sand 
and gravel with low scrubby bushes and plants dotted around.

Most of the birds on Tenerife were fairly quiet due to the time of year, but it 
was fascinating to hear familiar species like Robin, Blue Tit and Chiffchaff 
producing almost unrecognisable songs and calls!

Any help would be much appreciated.



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