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Thanks to all who replied.  I am convinced that the photo I asked about is
indeed of a Thayer's Gull (in a plumage with which I was unfamiliar).  I
will have to make another trek if the Slaty-backed Gull is still in
Prescott.

dan

On 1/22/07, dan&erika <[email protected]> wrote:
>
> I went to Prescott this morning and saw one gull that looked
> different.  Is it a slaty-backed???
>
> http://www.northern.edu/tallmand/dat/misc/slaty2.jpg
>
> Reasons for:
>
> 1, white subterminal wing spots clearly visible
> 2. streaked head and neck
> 3. darker gray underside to wings (as per Sibley) than herring.
> 4. black on outer edges of primaries
> 5. deep pink legs.
>
> Reason agains:
>
> 1. Mantle seems way too pale.
>
> I would appreciate any input from anybody with experience with the
> species.
>
> dan
> --
> Dan or Erika Tallman
> Around the Bend Birding Tours
> http://danerika.googlepages.com/aroundthebendbirdingtours
> [email protected]
> 2120 Taylor Ct., Northfield, MN 55047
>
> ".... the best shod travel with wet feet"
> "Beware of all enterprises that require new clothes ...."--Thoreau
>



-- 
Dan or Erika Tallman
Around the Bend Birding Tours
http://danerika.googlepages.com/aroundthebendbirdingtours
[email protected]
2120 Taylor Ct., Northfield, MN 55047

".... the best shod travel with wet feet"
"Beware of all enterprises that require new clothes ...."--Thoreau

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Thanks to all who replied.&nbsp; I am convinced that the photo I asked about is 
indeed of a Thayer&#39;s Gull (in a plumage with which I was unfamiliar).&nbsp; 
I will have to make another trek if the Slaty-backed Gull is still in Prescott.
<br><br>dan<br><br><div><span class="gmail_quote">On 1/22/07, <b 
class="gmail_sendername">dan&amp;erika</b> &lt;<a 
href="mailto:[email protected]";>[email protected]</a>&gt; 
wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid 
rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I went to Prescott this morning and saw one gull that 
looked<br>different.&nbsp;&nbsp;Is it a slaty-backed???<br><br><a 
href="http://www.northern.edu/tallmand/dat/misc/slaty2.jpg";>http://www.northern.edu/tallmand/dat/misc/slaty2.jpg
</a><br><br>Reasons for:<br><br>1, white subterminal wing spots clearly 
visible<br>2. streaked head and neck<br>3. darker gray underside to wings (as 
per Sibley) than herring.<br>4. black on outer edges of primaries<br>5. deep 
pink legs.
<br><br>Reason agains:<br><br>1. Mantle seems way too pale.<br><br>I would 
appreciate any input from anybody with experience with the 
species.<br><br>dan<br>--<br>Dan or Erika Tallman<br>Around the Bend Birding 
Tours<br><a href="http://danerika.googlepages.com/aroundthebendbirdingtours";>
http://danerika.googlepages.com/aroundthebendbirdingtours</a><br><a 
href="mailto:[email protected]";>[email protected]</a><br>2120 Taylor Ct., 
Northfield, MN 55047<br><br>&quot;.... the best shod travel with wet feet&quot;
<br>&quot;Beware of all enterprises that require new clothes 
....&quot;--Thoreau<br></blockquote></div><br><br clear="all"><br>-- <br>Dan or 
Erika Tallman <br>Around the Bend Birding Tours<br><a 
href="http://danerika.googlepages.com/aroundthebendbirdingtours";>
http://danerika.googlepages.com/aroundthebendbirdingtours</a><br><a 
href="mailto:[email protected]";>[email protected]</a><br>2120 Taylor Ct., 
Northfield, MN 55047<br><br>&quot;.... the best shod travel with wet feet&quot; 
<br>&quot;Beware of all enterprises that require new clothes ....&quot;--Thoreau

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