[mou] FW: [wisb] Ageing Northern Shrikes in the Field

Debbie Waters dlpwaters at hotmail.com
Fri Jan 11 21:34:09 CST 2008

Forwarded with permission...

Debbie Waters 
Education Director 
Hawk Ridge Bird Observatory 
P.O. Box 3006 
Duluth, MN 55803-3006 
dwaters at hawkridge.org 

-----Original Message-----
From: Wisconsin Birding Network [mailto:wisbirdn at mailhub.lawrence.edu] On
Behalf Of Ryan Brady
Sent: Friday, January 11, 2008 6:21 PM
To: Wisconsin Birding Network
Subject: [wisb] Ageing Northern Shrikes in the Field

As some of you know, I have been fortunate to capture, band, and observe
many Northern Shrikes in Ashland and Bayfield counties over the past few
years.  One of the first things I learned by having birds in hand was that
ageing them in the field while birding isn't as easy as I had thought.
Because this is an outstanding year for Northern Shrikes in much of
Wisconsin (but alas not here in my neck of the woods), I thought I would
share a bit on what I have learned about separating adults from immatures in
this species.
I wrote up a brief overview of this topic, which may someday appear on the
Wisconsin eBird page.  For now, I've created my own blog to host the article
and you can view it at the link below.
Please feel free to contact me with any comments or questions.
Ryan Brady
Grand View, Bayfield County, WI

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