All,
In the event that others may see this bird and ponder about the tags I
have included a copy of my report. I had pretty good looks at the bird
as it fed with other birds on the shore line.
Gerald White Muscatine,IA
-------- Original Message --------
Subject: tagged gull report
Date: Tue, 5 Oct 2010 07:35:56 -0400
From: [email protected]
To: [email protected]
Gerald,
Thank you for your report of the green patagial-tagged ring-billed gull
that you observed on 21 September 2010 along the Mississippi River at
Moline, Illinois. Based on the partial band number, I believe the gull
was a nesting adult female captured on Dime Pier in Chicago on 07 May
2007. The gull was one of 724 gulls tagged as part of a study to
determine local movements of gulls in response to an experiment where we
applied vegetable oil to gull eggs. We also used yellow, blue and orange
tags on gulls in the Chicago area. Since 2007, we have been tracking the
reports of people observing the gulls to both learn where the gulls
winter and to see if there is a re-sighting bias in the tag color
reported. There has been about a 2 to 1 difference in the reports with
the orange and yellow tags being reported more frequently than the blue
and green tags.
Thanks again for taking the time to report your observation and for
spotting one of the less reported colors! Research such as this could
not be accomplished without help from folks such as yourself.
Tom
Thomas W. Seamans
Supervisory Wildlife Biologist
USDA/Wildlife Services/National Wildlife Research Center-Ohio Field Station
6100 Columbus Avenue
Sandusky, Ohio 44870-9660
phone: 419-625-0242
fax: 419-625-8465
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