 |
|
 |
 |
 |
ID-FRONTIERS for January 14-20, 2007
[ Prev Week
| Next Week
| Calendar Month
| ID-FRONTIERS Info
]
|
Messages are displayed in the order they were received.
|
| Subject | From | Date | Time |
| Vagrancy: Causes and Results | SGMlod(AT)AOL.COM | Sun, 14 Jan 2007 | 4:54pm |
| More on Migration | SGMlod(AT)AOL.COM | Sun, 14 Jan 2007 | 5:12pm |
| Re: On vagrancy | SGMlod(AT)AOL.COM | Sun, 14 Jan 2007 | 5:14pm |
| Re: On vagrancy | SGMlod(AT)AOL.COM | Sun, 14 Jan 2007 | 5:20pm |
| Re: On Broad-billed Hummingbird Vagrancy | SGMlod(AT)AOL.COM | Sun, 14 Jan 2007 | 5:29pm |
| Strange Utah Gull | Tim Avery | Sun, 14 Jan 2007 | 6:44pm |
| possible Thayer's Gull, Daytona Beach FL | Robert Wallace | Sun, 14 Jan 2007 | 7:14pm |
| Vireo photo from South Florida | Larry Manfredi | Sun, 14 Jan 2007 | 7:54pm |
| Re: Strange Utah Gull | Ben Coulter | Sun, 14 Jan 2007 | 8:03pm |
| Re: Vireo photo from South Florida | Julian Hough | Sun, 14 Jan 2007 | 8:14pm |
| South American Tern? | Gunnar Engblom | Mon, 15 Jan 2007 | 12:22am |
| Re: South American Tern? | Gunnar Engblom | Mon, 15 Jan 2007 | 9:56pm |
| Perigrine falcon | Norman D.van Swelm | Wed, 17 Jan 2007 | 12:20pm |
| Re: Perigrine falcon | Allen Chartier | Wed, 17 Jan 2007 | 1:39pm |
| Re: Perigrine falcon | James P. Smith | Wed, 17 Jan 2007 | 2:24pm |
| Perigrine falcon | Norman D.van Swelm | Wed, 17 Jan 2007 | 4:05pm |
| Ageing American Kestrels | Peter Pyle | Wed, 17 Jan 2007 | 4:34pm |
| Vega type Gulls | David Vander Pluym | Wed, 17 Jan 2007 | 5:09pm |
| website on heuglin's gulls | Mars Muusse | Fri, 19 Jan 2007 | 3:51pm |
| Odd Gull, Oregon | DJLauten and KACaste | Sat, 20 Jan 2007 | 10:38am |
| hybrid or aberrant warbler in Panama | Martin Reid | Sat, 20 Jan 2007 | 11:07am |
| Re: Interesting gull in Michigan | Allen Chartier | Sat, 20 Jan 2007 | 11:23am |
| Possible Least Storm-Petrel in Lima | Gunnar Engblom | Sat, 20 Jan 2007 | 11:28am |
| More Utah Gulls | Tim Avery | Sat, 20 Jan 2007 | 3:48pm |
|
To use email addresses replace '(AT)' with '@'.
This is done to confuse the spam 'bots.
|
[ << | >> | ^^ ]
Subject: Vagrancy: Causes and Results
From: SGMlod(AT)AOL.COM
Date: 14 Jan 2007 4:54pm
----INCLUDING text/plain MIME SECTION----
Greetings All
Just back from a lovely week in Baja and trying to digest assorted comments.
We should not forget the master vagrater, Cattle Egret. There is a reason
this bird occurs almost across the globe, an apparent increased inborn tendency
to vagrate. In this species, the tendency seems non-directional, for the most
part (as opposed to mirror image or 180 degree misorientation, which appear
to be inborn genetic errors). In any case, Cattle Egret first arrived in the
the Americas as a vagrant, and seems to have done quite well.
Additionally, in Birds of Northern Melanesia, Mayr and Diamond actually
attempt to quantify a species tendency to vagrate and discuss this as it relates
to both range expansion and speciation. Should be required reading for anyone
interested in vagrant birds and biogeography.
Also, in DeSante's (and other's at PRBP) work, he found that eastern
"vagrant" warblers tended to occur irrespective of weather (relatively speaking)
and
not necessarily with the big landfalls of "normal" western species -- those
landfalls tended to be distinctly weather related, the vagrant occurrences
much less so. Finally, he found that caged "normal" warblers tried to head back
to the coast - the "reoriented." The "vagrant" warblers tended to continue
their misorientation to the southwest, which would take them out to sea. So, in
DeSante's work, something other than weather caused these birds to stray, at
least in most cases.
There are cases where weather clearly has played a role. I wrote an article
with Feldstein and Tweit about weather and the BT Curlew landfall; Patten and
Unitt? wrote a nice article on the impulse of southeastern passerines in CA
in 1992.
On to more emails. I hope I haven't repeated what others have already said.
Cheers
Steven Mlodinow
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: More on Migration
From: SGMlod(AT)AOL.COM
Date: 14 Jan 2007 5:12pm
----INCLUDING text/plain MIME SECTION----
Greetings All
A couple more points.
First - terminology.
There is migration and dispersal. Dispersal is mostly non-directional, as
engaged by Cattle Egrets post-breeding, Red Crossbills, etc.
Also, I like to use Bertholdt's definitions (Bird Migration by Bertholdt-- I
think I am spelling his name correctly-- is a must for anyone interested in
bird migration). Reverse Migration (as defined by Bertholdt) is when a bird
flies (typically) a short distance back the way it came to find habitat. We
used to see this on the Chicago lakefront. Large numbers of birds moving north
in fall looking for suitable habitat at daylight, presumably.
FT Flycatcher in US is by one of two mechanisms depending on season. Birds
in our fall are birds that flew north instead of south during the Austral
spring and would be labelled "180 degree misorientation" - note that
misorientation is used for birds showing a great departure from that species'
normal
patterns. Birds occurring during our spring are fall "overshoot" migrants that
have continued to migrate after the normal "off button" should have sent the
signal to stop migrating. The vast majority of these birds are first year
birds,
and the implication is that there is some sort of inborn error.
Finally, the big Cave Swallow displacements seem to largely weather related
as shown by one or two articles in North American Birds.
I think that there is a mixture of causes.
Also, for some reason as Nik hinted at, some species seem more prone to
in-born errors and others less so. It also seems that this is likely true for
weather-induced vagrancy.
Cheers
Steven Mlodinow
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Re: On vagrancy
From: SGMlod(AT)AOL.COM
Date: 14 Jan 2007 5:14pm
----INCLUDING text/plain MIME SECTION----
Hello Again
RTPipits may be a great example requiring weather and misorientation. The
misorientation sends them across the Pacific, but for them to make it to the
North American shore, they need sufficient tailwinds.
Cheers
Steve Mlodinow
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Re: On vagrancy
From: SGMlod(AT)AOL.COM
Date: 14 Jan 2007 5:20pm
----INCLUDING text/plain MIME SECTION----
Greetings All
David's point is well taken, but one must not forget that the burst in Cave
Swallow vagrancy to the NE coincided with a boom in the overall population.
Veit published a paper a number of years back (in the Auk, I believe) that
looked at vagrancy of several western species to Massachusetts (or perhaps it
was New England as a whole) and breeding success. The two were linked. Increased
young produced, increased vagrants that fall.
I have a hard time believing that the Cave Swallows that appear late in fall
in the northeast have a better survival rate than their fellows that didn't.
And though species don't "choose" a strategy, it is interesting to ponder
that some species do have a much greater tendency to disperse or misorient than
others.
Cheers
Steve Mlodinow
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Re: On Broad-billed Hummingbird Vagrancy
From: SGMlod(AT)AOL.COM
Date: 14 Jan 2007 5:29pm
----INCLUDING text/plain MIME SECTION----
Greetings Again
Sorry to ramble on
I think vagrancy can lead to range expansion, and does so more often than we
think. The interior of North America is becoming part of the normal range of
Pac Loon, albeit in relatively small numbers. I think that a certain number
of these birds always wandered to the interior, but the development of damned
reservoirs, etc have created habitat for these birds to survive -- and the
increasing numbers (undoubtedly partly due to observer effort) implies that
they are surviving and passing on their genes causing some degree of population
shift, much like that of Blackcap in Europe, albeit at a much smaller scale.
It is interesting to see that this is also happening with YBLO on an even
smaller scale, but does NOT seem to be happening much with RT Loon. Why is RTLO
different? I do wonder.
The new "habitat" created by hummingbird feeders in the southeast has done
the same thing with hummingbirds.
At least those are my utterly unsupported-by-date thoughts
Cheers
SteveM
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Strange Utah Gull
From: Tim Avery <tanager(AT)TIMAVERYBIRDING.COM>
Date: 14 Jan 2007 6:44pm
This is a multi-part message in MIME format.
----INCLUDING text/plain MIME SECTION----
Here's another for all the laruphiles to ponder. This afternoon Dave =
Slager, Colby Neuman and I located this bird in Salt Lake County, Utah. =
It was foraging on a compost heap with around 100 RBGU and several =
California Gulls. At first glance the white primaries on just one wing =
were what was odd about this bird. However, the leg color, heavy =
smudging on the head, slightly heavier bill, and larger head together =
add up to one weird bird.
Take a look:
http://timaverybirding.com/strange_gull/gull.html
What could create all these abnormalities on one bird? I can't even =
begin to imagine a hybrid, so what's the deal?
Thanks in advance for your responses.
Cheers,
Tim Avery
http://www.timaverybirding.com
http://www.birdtography.com=20
Salt Lake City, Utah
"I cannot help but think a curious event is this life of mine."
- John James Audubon
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: possible Thayer's Gull, Daytona Beach FL
From: Robert Wallace <chnuts(AT)YAHOO.COM>
Date: 14 Jan 2007 7:14pm
----INCLUDING text/plain MIME SECTION----
Greetings - On Thursday I photographed this gull at the Volusia County Land=
fill, near Daytona Beach FL. My original thought was that this bird was a =
Kumlien's Gull, because of its overall very light coloration, but several p=
eople have suggested that the bird may in fact be a pale Thayer's Gull, bec=
ause of the darkness of the brown coloration and silver lining of the prima=
ries. The only 1st winter Thayer's I have seen personally was much creamie=
r brown as a base coloration in the breast and head, and there are many pic=
tures on the web supporting this, but there is a picture in Olsen and Lars=
son (#288) that is pale like this bird. I believe the bird may be in the m=
iddle between Thayers and Kumliens in the Iceland-Kumliens-Thayers cline.=
=0A=0Ahttp://www.pbase.com/chnuts/volusia_dump_1-11-07=0A=0AThank you in ad=
vance for your comments,=0A=0AR. D. Wallace=0ANew Smyrna Beach FL=0A=0A
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Vireo photo from South Florida
From: Larry Manfredi <birderlm(AT)BELLSOUTH.NET>
Date: 14 Jan 2007 7:54pm
Here are a few photos I took today here in South Florida in the village
of Pinecrest of a vireo. Any comments would be welcomed.
http://www.southfloridabirding.com/images/tasphotos/vireoDSC_0763.jpg
http://www.southfloridabirding.com/images/tasphotos/vireo2DSC_0766.jpg
http://www.southfloridabirding.com/images/tasphotos/vireo3DSC_0769.jpg
http://www.southfloridabirding.com/images/tasphotos/vireo5DSC_0771.jpg
Larry Manfredi
Homestead, FL
E-mail: birderlm(AT)bellsouth.net
http://www.southfloridabirding.com
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
[ << | >> | ^^ ]
Subject: Re: Strange Utah Gull
From: Ben Coulter <anax_longipes(AT)YAHOO.COM>
Date: 14 Jan 2007 8:03pm
----INCLUDING text/plain MIME SECTION----
Jerry McWilliams and I observed a very similar Ring-billed Gull flying over a
partially frozen Presque Isle Bay in Erie, PA, in late Feb. 2002. All of the
outer primaries on the right wing were completely lacking in pigment, as well as
either P8 or P9 on the left wing. Unfortunately, the gull was seen only in
flight a substantial distance away, and photographs were not obtained. Aside
from the abberant coloration, this individual appeared essentially typical for a
RBGU, at least from what we could discern from this far away.
Cheers,
Ben Coulter
Erie, PA
Tim Avery <tanager(AT)TIMAVERYBIRDING.COM> wrote: Here's another for all the
laruphiles to ponder. This afternoon Dave Slager, Colby Neuman and I located
this bird in Salt Lake County, Utah. It was foraging on a compost heap with
around 100 RBGU and several California Gulls. At first glance the white
primaries on just one wing were what was odd about this bird. However, the leg
color, heavy smudging on the head, slightly heavier bill, and larger head
together add up to one weird bird.
Take a look:
http://timaverybirding.com/strange_gull/gull.html
What could create all these abnormalities on one bird? I can't even begin to
imagine a hybrid, so what's the deal?
Thanks in advance for your responses.
Cheers,
Tim Avery
http://www.timaverybirding.com
http://www.birdtography.com
Salt Lake City, Utah
"I cannot help but think a curious event is this life of mine."
- John James Audubon
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
---------------------------------
Expecting? Get great news right away with email Auto-Check.
Try the Yahoo! Mail Beta.
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Re: Vireo photo from South Florida
From: Julian Hough <jrhough1(AT)SNET.NET>
Date: 14 Jan 2007 8:14pm
Larry,
Photos look like a Blue-headed Vireo..subtle colors of mantle and contrast
in the earcoverts are hard to judge on my monitor, so in lieu of any other
clues that's my guess..
Julian Hough,
CT, USA
jrhough1(AT)snet.net
www.naturescapeimages.net
----- Original Message -----
From: "Larry Manfredi" <birderlm(AT)BELLSOUTH.NET>
To: <BIRDWG01(AT)LISTSERV.ARIZONA.EDU>
Sent: Sunday, January 14, 2007 9:55 PM
Subject: [BIRDWG01] Vireo photo from South Florida
> Here are a few photos I took today here in South Florida in the village of
> Pinecrest of a vireo. Any comments would be welcomed.
>
> http://www.southfloridabirding.com/images/tasphotos/vireoDSC_0763.jpg
>
> http://www.southfloridabirding.com/images/tasphotos/vireo2DSC_0766.jpg
>
> http://www.southfloridabirding.com/images/tasphotos/vireo3DSC_0769.jpg
>
> http://www.southfloridabirding.com/images/tasphotos/vireo5DSC_0771.jpg
>
>
>
> Larry Manfredi
> Homestead, FL
> E-mail: birderlm(AT)bellsouth.net
> http://www.southfloridabirding.com
>
>
> Join or Leave BIRDWG01:
> http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
>
> Archives: http://listserv.arizona.edu/archives/birdwg01.html
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
[ << | >> | ^^ ]
Subject: South American Tern?
From: Gunnar Engblom <gengblom(AT)GMAIL.COM>
Date: 15 Jan 2007 12:22am
----INCLUDING text/plain MIME SECTION----
Dear all
I have uploaded to http://birdingperu.com/picsfiles/photos.asp?idtipopic=3D=
1 a
pic of a tern taken at Pantanos de Villa, Lima yesterday. It is an adult
in non-breeding plumage.
I cannot say Sternas are my forte. The bulky bill and slightly droped I use
as ID mark once I got it photographed, but during the 6 seconds I had the
bird in view, I could not identify it.
Shortcuts? '
Are the slight wedge on the inner primaries or the blackish line on the
outer primary good marks?
Can anyone point to good pages on the web for Sternas - especially
non-breeding plumages of Common, Arctic, South American and Antarctic?
Saludos
Gunnar
--=20
Gunnar Engblom-Lima, Peru.
Kolibri Expeditions=96Birdwatching in South America. More Birds!
http://www.kolibriexpeditions.com
www.birding-peru.com - checklist and data-base. Record your sightings
on-line, forum, pictures, identification, Expedition Birding, etc.
Tel: +51 1 4765016 cel: 51-1-96437749 or 99007886
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Re: South American Tern?
From: Gunnar Engblom <gengblom(AT)GMAIL.COM>
Date: 15 Jan 2007 9:56pm
----INCLUDING text/plain MIME SECTION----
Dear all
"Terns" out it was not so straight-foward as I thought.
The discussion how to ID sternas in Peru (and Chile) is on at
http://groups.yahoo.com/group/Birdingperu/
Pics can be seen on:
http://birding-peru.com/picsfiles/photos.asp?idtipopic=3D1
Gunnar
--=20
Gunnar Engblom-Lima, Peru.
Kolibri Expeditions=96Birdwatching in South America. More Birds!
http://www.kolibriexpeditions.com
www.birding-peru.com - checklist and data-base. Record your sightings
on-line, forum, pictures, identification, Expedition Birding, etc.
Tel: +51 1 4765016 cel: 51-1-96437749 or 99007886
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Perigrine falcon
From: "Norman D.van Swelm" <Norman.vanswelm(AT)wxs.nl>
Date: 17 Jan 2007 12:20pm
This is a multi-part message in MIME format.
--Boundary_(ID_92UkItECDy3OBQUih9ITbQ)
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 7BIT
According to the unknown Canadian photographer the bird in the somewhat
uncomfortable position is a Peregrine but is it?
Norman
http://forums.dpreview.com/forums/readflat.asp?forum=1021&thread=21694890
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
--Boundary_(ID_92UkItECDy3OBQUih9ITbQ)
Content-type: text/html; charset=iso-8859-1
Content-transfer-encoding: 7BIT
----DELETED HTML-ENCODED SECTION----
<p>
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
<p>
Archives: http://listserv.arizona.edu/archives/birdwg01.html
<p>
--Boundary_(ID_92UkItECDy3OBQUih9ITbQ)--
[ << | >> | ^^ ]
Subject: Re: Perigrine falcon
From: Allen Chartier <amazilia1(AT)COMCAST.NET>
Date: 17 Jan 2007 1:39pm
This is a multi-part message in MIME format.
----INCLUDING text/plain MIME SECTION----
Norman,
Below this photo are several comments that correctly identify the bird =
in the Red-tailed Hawk's talons as a female American Kestrel.=20
Allen Chartier
amazilia1(AT)comcast.net
1442 West River Park Drive
Inkster, MI 48141
Website: http://www.amazilia.net
Michigan HummerNet: http://www.amazilia.net/MIHummerNet
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Every day, the hummingbird eats its own weight in food.
You may wonder how it weighs the food. It doesn't.
It just eats another hummingbird.
---Steven Wright
----- Original Message -----=20
From: Norman D.van Swelm=20
To: BIRDWG01(AT)LISTSERV.ARIZONA.EDU=20
Sent: Wednesday, January 17, 2007 2:19 PM
Subject: [BIRDWG01] Perigrine falcon
According to the unknown Canadian photographer the bird in the =
somewhat uncomfortable position is a Peregrine but is it?
Norman
=
http://forums.dpreview.com/forums/readflat.asp?forum=3D1021&thread=3D2169=
4890
Join or Leave BIRDWG01: =
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01=20
Archives: http://listserv.arizona.edu/archives/birdwg01.html=20
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Re: Perigrine falcon
From: "James P. Smith" <keenbirder(AT)YAHOO.COM>
Date: 17 Jan 2007 2:24pm
----INCLUDING text/plain MIME SECTION----
Norman,
That would be a beast of a Red-tail if the bird in its talons was a Peregrine!
Surely the prey item is an American Kestrel? Take a look at the head pattern.
Best,
James
Amherst, MA.
"Norman D.van Swelm" <Norman.vanswelm(AT)WXS.NL> wrote:
According to the unknown Canadian photographer the bird in the somewhat
uncomfortable position is a Peregrine but is it?
Norman
http://forums.dpreview.com/forums/readflat.asp?forum=1021&thread=21694890
#ygrp-mlmsg { FONT-SIZE: small; FONT-FAMILY: arial,helvetica,clean,sans-serif
} #ygrp-mlmsg TABLE { } #ygrp-mlmsg SELECT { FONT: 99%
arial,helvetica,clean,sans-serif } INPUT { FONT: 99%
arial,helvetica,clean,sans-serif } TEXTAREA { FONT: 99%
arial,helvetica,clean,sans-serif } #ygrp-mlmsg PRE { FONT: 100% monospace }
CODE { FONT: 100% monospace } #ygrp-mlmsg * { LINE-HEIGHT: 1.22em } #ygrp-text
{ FONT-FAMILY: Georgia } #ygrp-text P { MARGIN: 0px 0px 1em } #ygrp-tpmsgs {
CLEAR: both; FONT-FAMILY: Arial } #ygrp-vitnav { FONT-SIZE: 77%; MARGIN: 0px;
PADDING-TOP: 10px; FONT-FAMILY: Verdana } #ygrp-vitnav A { PADDING-RIGHT: 1px;
PADDING-LEFT: 1px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px } #ygrp-actbar {
CLEAR: both; MARGIN: 25px 0px; COLOR: #666; WHITE-SPACE: nowrap; TEXT-ALIGN:
right } #ygrp-actbar .left { FLOAT: left; WHITE-SPACE: nowrap } .bld {
FONT-WEIGHT: bold } #ygrp-grft { PADDING-RIGHT: 0px; PADDING-LEFT: 0px;
FONT-SIZE: 77%; PADDING-BOTTOM: 15px;
PADDING-TOP: 15px; FONT-FAMILY: Verdana } #ygrp-ft { PADDING-RIGHT: 0px;
BORDER-TOP: #666 1px solid; PADDING-LEFT: 0px; FONT-SIZE: 77%; PADDING-BOTTOM:
5px; PADDING-TOP: 5px; FONT-FAMILY: verdana } #ygrp-mlmsg #logo {
PADDING-BOTTOM: 10px } #ygrp-vital { PADDING-RIGHT: 0px; PADDING-LEFT: 8px;
MARGIN-BOTTOM: 20px; PADDING-BOTTOM: 8px; PADDING-TOP: 2px; BACKGROUND-COLOR:
#e0ecee } #ygrp-vital #vithd { FONT-WEIGHT: bold; FONT-SIZE: 77%;
TEXT-TRANSFORM: uppercase; COLOR: #333; FONT-FAMILY: Verdana } #ygrp-vital UL {
PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 2px 0px;
PADDING-TOP: 0px } #ygrp-vital UL LI { CLEAR: both; BORDER-RIGHT: #e0ecee 1px
solid; BORDER-TOP: #e0ecee 1px solid; BORDER-LEFT: #e0ecee 1px solid;
BORDER-BOTTOM: #e0ecee 1px solid; LIST-STYLE-TYPE: none } #ygrp-vital UL LI .ct
{ PADDING-RIGHT: 0.5em; FONT-WEIGHT: bold; FLOAT: right; WIDTH: 2em; COLOR:
#ff7900; TEXT-ALIGN: right } #ygrp-vital UL LI .cat { FONT-WEIGHT: bold }
#ygrp-vital A { TEXT-DECORATION: none } #ygrp-vital A:hover {
TEXT-DECORATION: underline } #ygrp-sponsor #hd { FONT-SIZE: 77%; COLOR: #999 }
#ygrp-sponsor #ov { PADDING-RIGHT: 13px; PADDING-LEFT: 13px; MARGIN-BOTTOM:
20px; PADDING-BOTTOM: 6px; PADDING-TOP: 6px; BACKGROUND-COLOR: #e0ecee }
#ygrp-sponsor #ov UL { PADDING-RIGHT: 0px; PADDING-LEFT: 8px; PADDING-BOTTOM:
0px; MARGIN: 0px; PADDING-TOP: 0px } #ygrp-sponsor #ov LI { PADDING-RIGHT: 0px;
PADDING-LEFT: 0px; FONT-SIZE: 77%; PADDING-BOTTOM: 6px; PADDING-TOP: 6px;
LIST-STYLE-TYPE: square } #ygrp-sponsor #ov LI A { FONT-SIZE: 130%;
TEXT-DECORATION: none } #ygrp-sponsor #nc { PADDING-RIGHT: 8px; PADDING-LEFT:
8px; MARGIN-BOTTOM: 20px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px;
BACKGROUND-COLOR: #eee } #ygrp-sponsor .ad { PADDING-RIGHT: 0px; PADDING-LEFT:
0px; PADDING-BOTTOM: 8px; PADDING-TOP: 8px } #ygrp-sponsor .ad #hd1 {
FONT-WEIGHT: bold; FONT-SIZE: 100%; COLOR: #628c2a; LINE-HEIGHT: 122%;
FONT-FAMILY: Arial }
#ygrp-sponsor .ad A { TEXT-DECORATION: none } #ygrp-sponsor .ad A:hover {
TEXT-DECORATION: underline } #ygrp-sponsor .ad P { MARGIN: 0px } o {
FONT-SIZE: 0px } .MsoNormal { MARGIN: 0px } #ygrp-text TT { FONT-SIZE: 120% }
BLOCKQUOTE { MARGIN: 0px 0px 0px 4px } .replbq { } Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
---------------------------------
Looking for earth-friendly autos?
Browse Top Cars by "Green Rating" at Yahoo! Autos' Green Center.
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Perigrine falcon
From: "Norman D.van Swelm" <Norman.vanswelm(AT)wxs.nl>
Date: 17 Jan 2007 4:05pm
This is a multi-part message in MIME format.
--Boundary_(ID_gF7rdm4T6t+5rrH1kMqetA)
Content-type: text/plain; charset=iso-8859-1
Content-transfer-encoding: 7BIT
Thank you for your quick response. All of you dismissed Peregrine, one of you
thought the Red-tailed Hawk was the uncomfortable one. The remaining eleven are
convinced the tortured individual is an American Kestrel and of those, three
claim it to be a female and two a first-year bird. One poor soul never reached
the site!
In Sibley's Guide, the portrayed adult male and female have reddish underparts.
The poor falcon in the Red-tailed's claws shows rather pale sandy underparts
lacking any red. Is this typical for young birds?
Cheers, Norman
>According to the unknown Canadian photographer the bird in the somewhat
uncomfortable position is a Peregrine but is it?
http://forums.dpreview.com/forums/readflat.asp?forum=1021&thread=21694890
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
--Boundary_(ID_gF7rdm4T6t+5rrH1kMqetA)
Content-type: text/html; charset=iso-8859-1
Content-transfer-encoding: 7BIT
----DELETED HTML-ENCODED SECTION----
<p>
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
<p>
Archives: http://listserv.arizona.edu/archives/birdwg01.html
<p>
--Boundary_(ID_gF7rdm4T6t+5rrH1kMqetA)--
[ << | >> | ^^ ]
Subject: Ageing American Kestrels
From: Peter Pyle <ppyle(AT)BIRDPOP.ORG>
Date: 17 Jan 2007 4:34pm
----INCLUDING text/plain MIME SECTION----
The kestrel in the Red-tailed Hawk's claws is a female due to the
streaked underparts and heavily barred tail. First-year males (even
juveniles!) resemble adult males in plumage. The bird appears to be
an adult female due to the width of the outermost bar on the tail
(excluding the central rectrices). In adults (AHY/ASYs) this bar is
9-14 mm wide and noticeably wider than the other bars. In young
females (HY/SYs), which retain juvenile rectrices until a year old,
the outermost bar is 7-10 mm wide and not noticeably wider than the
proximal bars. In hand, another way to age falcons is by detecting
"molt clines" in the primaries and secondaries. They replace feathers
outward and inward from centers at p4/p5 and s4/s5 and the clines in
feather wear, especially among p4-p1 (fresher proximally) are
noticeable in adults, whereas in first-year birds all primaries and
secondaries are even in wear. I can't really ascertain this on the
kestrel in the image but it appears that it could be showing the
adult pattern. As far as body plumage goes, first-year and adult
kestrels (of both sexes) do not differ appreciably.
Peter Pyle
At 03:05 PM 1/17/2007, Norman D.van Swelm wrote:
>
>Thank you for your quick response. All of you dismissed Peregrine,
>one of you thought the Red-tailed Hawk was the uncomfortable one.
>The remaining eleven are convinced the tortured individual is an
>American Kestrel and of those, three claim it to be a female and two
>a first-year bird. One poor soul never reached the site!
>In Sibley's Guide, the portrayed adult male and female have reddish
>underparts. The poor falcon in the Red-tailed's claws shows rather
>pale sandy underparts lacking any red. Is this typical for young birds?
>Cheers, Norman
>
> >According to the unknown Canadian photographer the bird in the
> somewhat uncomfortable position is a Peregrine but is it?
>
><http://forums.dpreview.com/forums/readflat.asp?forum=1021&thread=21694890>http://forums.dpreview.com/forums/readflat.asp?forum=1021&thread=21694890
>
>Join or Leave BIRDWG01:
>http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
>
>Archives: http://listserv.arizona.edu/archives/birdwg01.html
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Vega type Gulls
From: David Vander Pluym <SCRE(AT)AOL.COM>
Date: 17 Jan 2007 5:09pm
----INCLUDING text/plain MIME SECTION----
Hello all,
This winter I have found a couple of gulls in California that have shown
characteristics of Vega Gull. Some I feel are likely Vega's and others I am
unsure what to make of. Photos are here:
_http://www.flickr.com/photos/15889648@N00/_
(http://www.flickr.com/photos/15889648@N00/)
The bird labeled Vegaish Herring Gull is to me especially interesting as in
a lot of ways it seems to be a typical smithsonianus, but the greater coverts
seem outside the range of that taxa. Comments are most welcome and I would
especially like to hear from people who have seen otherwise typical Smith's
with greater coverts similar to the bird I mentioned above.
David Vander Pluym
Santa Cruz
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: website on heuglin's gulls
From: Mars Muusse <marsmuusse(AT)WANADOO.NL>
Date: 19 Jan 2007 3:51pm
Hi,
Last few months Ruud Altenburg, Chris Gibbins, Visa Rauste, Hannu
Koskinen, Theo Muusse and I have tried to launch a webpage on the ID of
spring 2cy heuglini. On these pages, we compare Russian Heuglin's Gulls
with western taxa, illustrated by ringed 2cy graellsii and intermedius
LBBG's and ringed nominate fuscus Baltic LBBG's. We also added several
putative Heuglin's Gulls from Finland and W Europe.
Have a look directly at:
http://www.gull-research.org/heuglini-id/
Or check out the entire site at the portal:
www.gull-research.org
Cheers,
Mars Muusse
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
[ << | >> | ^^ ]
Subject: Odd Gull, Oregon
From: DJLauten and KACastelein <deweysage(AT)VERIZON.NET>
Date: 20 Jan 2007 10:38am
Folks,
On Thursday at Siltcoos, Lane Cty, Oregon, we saw and photographed a
gull I believe to be a Glaucous-winged, however take at look at the one
photo at
http://thebirdguide.com/temp_images/RecentPhotos/RecentBirdPhotos.htm
should be the second bird down. I believe the bird is leucistic.
Thought some gull folks might like to see.
Cheers
Dave Lauten and Kathy Castelein
Bandon OR
deweysage(AT)verizon.net
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
[ << | >> | ^^ ]
Subject: hybrid or aberrant warbler in Panama
From: Martin Reid <upupa(AT)AIRMAIL.NET>
Date: 20 Jan 2007 11:07am
Dear all,
Some of you may find this warbler worthy of discussion:
http://www.martinreid.com/Main%20website/warblersp1.html
I have my thoughts but I'll see what surfaces from ID-land...
Cheers,
Martin
--
>Martin Reid
>San Antonio, Texas
>mailto:upupa(AT)airmail.net
>http://www.martinreid.com
Join or Leave BIRDWG01: http://listserv.arizona.edu/cgi-bin/wa?SUBED1=birdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
[ << | >> | ^^ ]
Subject: Re: Interesting gull in Michigan
From: Allen Chartier <amazilia1(AT)COMCAST.NET>
Date: 20 Jan 2007 11:23am
This is a multi-part message in MIME format.
----INCLUDING text/plain MIME SECTION----
I just wanted to thank the few individuals who took enough interest in =
this gull to provide commentary. The bird has not been relocated, and no =
open wing shots have been obtained. It will be dumped into the =
"unidentified" bin until more information surfaces.
Allen Chartier
amazilia1(AT)comcast.net
1442 West River Park Drive
Inkster, MI 48141
Website: http://www.amazilia.net
Michigan HummerNet: http://www.amazilia.net/MIHummerNet
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Every day, the hummingbird eats its own weight in food.
You may wonder how it weighs the food. It doesn't.
It just eats another hummingbird.
---Steven Wright
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: Possible Least Storm-Petrel in Lima
From: Gunnar Engblom <gengblom(AT)GMAIL.COM>
Date: 20 Jan 2007 11:28am
----INCLUDING text/plain MIME SECTION----
Hello everyone
From Yesterdays pelagic from Lima we had a possible Least Storm-Petrel,
which included 7 species of Storm-Petrels if this holds!!!
We noticed very small size similar to the Elliots nearby.
Poor shots can be found on
http://www.birdingperu.com/picsfiles/photos.asp?idtipopic=3D1
I have no previous experience of this species, but the bird we saw looked t=
o
small to be Markham's or Black which we see regularily....
Maybe it was just the molt giving this effect though. I don't know. Any
comments please!!
Gunnar Engblom
PS: Sorry for the poor pics. Got some nice Black and Markham's Storm-Petrel=
s
which I will post later. Some interesting molt pics that some of you will
find interesting!!
Only one small Sterna (I think Common) which I also shall post later!
--=20
Gunnar Engblom-Lima, Peru.
Kolibri Expeditions=96Birdwatching in South America. More Birds!
http://www.kolibriexpeditions.com
www.birding-peru.com - checklist and data-base. Record your sightings
on-line, forum, pictures, identification, Expedition Birding, etc.
Tel: +51 1 4765016 cel: 51-1-96437749 or 99007886
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
[ << | >> | ^^ ]
Subject: More Utah Gulls
From: Tim Avery <tanager(AT)TIMAVERYBIRDING.COM>
Date: 20 Jan 2007 3:48pm
This is a multi-part message in MIME format.
----INCLUDING text/plain MIME SECTION----
Here are some more from Utah. Any thoughts would be appreciated on the =
bird that looks a like a LBBG; and the Lightly marked Herring/Nelson's =
Type.
http://timaverybirding.com/more_gulls/index.html
I am still working on figuring out the birds less common to Utah and any =
help or thoughts would be appreciated!
Thanks,
Tim Avery
http://www.timaverybirding.com
http://www.birdtography.com=20
Salt Lake City, Utah
"I cannot help but think a curious event is this life of mine."
- John James Audubon
Join or Leave BIRDWG01:
http://listserv.arizona.edu/cgi-bin/wa?SUBED1=3Dbirdwg01
Archives: http://listserv.arizona.edu/archives/birdwg01.html
----DELETED text/html MIME SECTION----
|
 |
 |
 |