RE: [nfc-l] Does "Gambel's" White-crowned Sparrow have a different flight call?

2017-11-21 Thread Alvaro Jaramillo 
Ted

   Don’t know about night calls, but calls in general are quite different for 
the Western Coastal “Yellow-billed” vs Gambell’s. There are call note 
differences that are marked in Rufous-collared Sparrow in South America too. 
Not sure what to make of some of this, although if I would have split 
“Yellow-billed” White-crows as a species years ago if someone was crazy enough 
to give me taxonomic control of the universe. 

Alvaro 

 

Alvaro Jaramillo

  alv...@alvarosadventures.com

www.alvarosadventures.com

 

From: bounce-2419656-53236...@mm.list.cornell.edu 
[mailto:bounce-2419656-53236...@mm.list.cornell.edu] On Behalf Of Ted Floyd
Sent: Tuesday, November 21, 2017 1:50 PM
To: NFC-L 
Subject: [nfc-l] Does "Gambel's" White-crowned Sparrow have a different flight 
call?

 

Hey, all. This is totally conjectural. And it's based on a small sample size. 
But, hey, ya gotta start somewhere.


So...a bit more than a month ago, I posted a link to a "Gambel's" White-crowned 
Sparrow (subspecies gambelii) flight call I'd uploaded to eBird/Macaulay, and 
one person flat-out questioned the ID. That's cool. Always good to maintain a 
healthy skepticism. However, the bird in question was perched right in front of 
me, in broad daylight.

 

And now I have another such recording, definitely of a different bird 
(different age), and it's not dissimilar from the first. Both have this little 
squiggle at the end.

 

And the only Xeno-Canto upload of gambelii flight calls (other than my own 
recordings), by Tayler Brooks, also shows the squiggle.

 

Again, a pretty small sample. And flight calls are variable. So I'm not wedded 
to this. But I thought I'd put it out there.

 

Here are my two Macaulay uploads:

https://macaulaylibrary.org/asset/75818451

 

https://macaulaylibrary.org/asset/70518311

 

And here is the Tayler Brooks recording:

http://www.xeno-canto.org/41863

 

It might well be nothing at all. But, given that Bill Evans has mentioned that 
there's an effort under way to expand the library of flight calls for Flight 
Calls of Migratory Birds (hooray!), I guess I've been thinking a bit more about 
taxa like gambelii that understandably aren't included in the first/Eastern 
edition of Flight Calls.

 

Ted Floyd

Lafayette, Boulder County, Colorado, USA

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[nfc-l] Does "Gambel's" White-crowned Sparrow have a different flight call?

2017-11-21 Thread Ted Floyd 
Hey, all. This is totally conjectural. And it's based on a small sample
size. But, hey, ya gotta start somewhere.

So...a bit more than a month ago, I posted a link to a "Gambel's"
White-crowned Sparrow (subspecies *gambelii*) flight call I'd uploaded to
eBird/Macaulay, and one person flat-out questioned the ID. That's cool.
Always good to maintain a healthy skepticism. However, the bird in question
was perched right in front of me, in broad daylight.

And now I have another such recording, definitely of a different bird
(different age), and it's not dissimilar from the first. Both have this
little squiggle at the end.

And the only Xeno-Canto upload of *gambelii* flight calls (other than my
own recordings), by Tayler Brooks, also shows the squiggle.

Again, a pretty small sample. And flight calls are variable. So I'm not
wedded to this. But I thought I'd put it out there.

Here are my two Macaulay uploads:

https://macaulaylibrary.org/asset/75818451

https://macaulaylibrary.org/asset/70518311

And here is the Tayler Brooks recording:

http://www.xeno-canto.org/41863

It might well be nothing at all. But, given that Bill Evans has mentioned
that there's an effort under way to expand the library of flight calls
for *Flight
Calls of Migratory Birds* (hooray!), I guess I've been thinking a bit more
about taxa like *gambelii* that understandably aren't included in the
first/Eastern edition of Flight Calls.

Ted Floyd
Lafayette, Boulder County, Colorado, USA

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