[texbirds] Re: POC update
- From: "John Arvin" <jarvin@xxxxxxxx>
- To: <sanchez@xxxxxxxxxxxxxx>, "brushfreeman@xxxxxxxxx" <brushfreeman@xxxxxxxxx>, "texbirds@xxxxxxxxxxxxx" <texbirds@xxxxxxxxxxxxx>
- Date: Fri, 5 Apr 2013 11:21:23 -0500
Don't confuse the Yucatan "Vaux's" swifts (resident there and throughout
eastern Mexico and almost surely a separate species) with the migratory
population that breeds in the Pacific northwest. Due to identification
problems the exact wintering grounds of the latter are not well known. Yes,
it is possible that a Vaux's Swift (NW flavor) could occur in Texas as a
migrant but documenting it would be a matter of extreme luck and would
likely require a specimen. Various populations of Vaux's Swift are resident
from Mexico to central South America. Once someone tackles the whole
complex and works out their relationships to one another then maybe the
exact number of species involved and what their ranges are precisely can
be resolved. Don't hold your breath. Swifts of almost all New World species
are extremely difficult to study.
John C. Arvin
Research Associate
Gulf Coast Bird Observatory
103 West Hwy 332
Lake Jackson, TX 77566
jarvin@xxxxxxxx
www.gcbo.org
Austin, Texas
----------------------------------------
From: "Sanchez, Isaac C" <sanchez@xxxxxxxxxxxxxx>
Sent: Friday, April 05, 2013 11:08 AM
To: "brushfreeman@xxxxxxxxx" <brushfreeman@xxxxxxxxx>,
"texbirds@xxxxxxxxxxxxx" <texbirds@xxxxxxxxxxxxx>
Subject: [texbirds] Re: POC update
Is it possible that in large groups of migrating swifts moving across the
Texas coast, that a few Vaux's might mix in? It looks like some Vaux's
winter in the Yucatan peninsula and some might hook up with the Chimneys
on their way back north.
And if they do, how would we be able to differentiate them from the
Chimneys?
Isaac Sanchez
Austin
On 4/3/13 6:26 PM, "Brush Freeman" <brushfreeman@xxxxxxxxx> wrote:
>My Lord are there Swifts etc.!...I am not even going to speculate as to
>tomorrow is a complete no brainer for migrants on the coast!...B
>--
>Brush Freeman
>361-655-7641 Cell
>http://texasnaturenotes.blogspot.com/
>Finca Alacranes., Utley,Texas
>
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