Any chance we can age this particular bird? The idea that it might be 7 years old (young?) is spectacular

-MC

On Thu, Jan 13, 2022 at 10:54 AM David Webster <davisigno@...> wrote:

Thanks all, for weighing in on this!

David Webster

On Thu, Jan 13, 2022 at 10:43 AM Peter Pyle <ppyle@...> wrote:

I asked Mark Dettling of Point Blue for an update
on this project and it is pasted in below. I too
have been seeing these banded birds regularly at
the east end of the Concrete Bridge - all adults
this winter. I presume these are all nuttalli (as
opposed to pugentensis) but I don't know this for certain. Cheers, Peter

Hi Peter,
   These WCSP are part of a study that Elizabeth
Derryberry (now at the University of Knoxville)
has been running investigating differences in
song between urban (the SF birds) and rural (the
Bolinas/Pt Reyes birds) sites. The most recent
grad student to work on the project is Ruth
Simberloff. Our current lead bander at Palo, Mike
Mahoney, worked with Ruth last year and might
provide more detail (and pass along the sighting
to Ruth). They banded at both Lobos Creek and
Lake Merced, so these are their birds.

Mark

At 05:16 PM 1/12/2022, Linda Swanson wrote:
>This may be one of the banded White-crowned
>Sparrows from a research project in 2014 and
>2015. 41 White-crowned Sparrows were banded in
>SF in 2014 (unknown location) and additional
>White-crowned Sparrows were banded in 2015 at
>Lake Merced near the Concrete Bridge, and at
>Golden Gate Park near the Polo Fields.
>
>Here is info about the project from the sign used in the field:
>"Summary: We are investigating several factors
>affecting the song of local White-Crowned
>Sparrows. We are putting on color bracelets to
>keep track of the individual birds and working
>with audio recordings to analyze song and
>behavior. This study will provide valuable
>insights into avian communication.â€

>Researchers: from San Francisco State University and Tulane University
>Research Permit #032014 SF Parks and Rec
>#GOGA-2014-SCI-0017"
>
>I had the pleasure of being a volunteer field
>assistant to the grad student from SFSU working on this research project.
>Attached is a photo of a just-banded
>White-crowned Sparrow, Golden Gate Park, 4/24/2015.
>Linda Swanson
>
>
>
>>On Jan 12, 2022, at 3:54 PM, David Webster
>><<mailto:davisigno@...>davisigno@...> wrote:
>>
>>Just curious if anyone might know anything
>>about these bands. It's the first time I've
>>come across a banded sparrow. Seen in Lobos Creek this afternoon.
>>
>>David Webster
>>
>><DSCF3762.jpg>
> >

--

Mike Carozza
914-475-9355