ID-FRONTIERS for May 11-17, 2008

Messages are displayed in the order they were received.  Subject  From  Date   Time   Geographic variation Hermit Thrush C. guttatus   Jim Barton    Mon, 12 May 2008   7:49am   pictures of Taimyr Gull Larus taimyrensis   Norman D.van Swelm   Tue, 13 May 2008   4:26am   Hybrid Harlan's x Rough-legged Hawks   Ian Paulsen    Fri, 16 May 2008   5:02pm

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Subject: Geographic variation Hermit Thrush C. guttatus
From: Jim Barton <redwingatfp1986(AT)COMCAST.NET>
Date: 12 May 2008 7:49am

    Hello.  I'm wondering whether a form of the eastern variant of the 
Hermit Thrush >C. faxoni closely approaches  the western mountain (Nat 
Geo)/interior west (Sibley) form >C. auduboni.

    A bird seen this morning in the Consecration Dell at the Mt. Auburn 
Cemetery in Cambridge, MA looked to be a western mountain form. 
Description: gray Catharus thrush suggesting both Swainson's and 
Gray-cheeked/Bicknell's but lacking any coloration in the face, and 
presenting a very dull reddish tail, seen to contrast with the back only in 
good light.  Also presenting a complete white eye-ring.

    The bird looked good for auduboni.  A number of years ago I saw a 
similar bird in the same location on almost the same date.

    Nat Geo shows a complete eye-ring, Sibley an incomplete eye-ring.

    Yours,

    Jim Barton
    Cambridge, MA 

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Subject: pictures of Taimyr Gull Larus taimyrensis
From: "Norman D.van Swelm" <Norman.vanswelm(AT)wxs.nl>
Date: 13 May 2008 4:26am

More pictures of Taimyr Gulls taken on the Russian breeding grounds can be 
seen here:

  http://home.planet.nl/~swelm001/gulls/taimyrgull/taimyrgull.htm

Norman 

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Subject: Hybrid Harlan's x Rough-legged Hawks
From: Ian Paulsen <birdbooker(AT)ZIPCON.NET>
Date: 16 May 2008 5:02pm

HI ALL:
 I got this from Bill Clark:

 http://www.jimzipp.com/Hawk-ID.html

-- 

Ian Paulsen
Bainbridge Island, WA, USA
" Which just goes to show that a
  passion for books is extremely unhealthy."
 from Cornelia Funke's "Inkheart".

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