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Black-headed Gull - Chroicocephalus ridibundus






© Adrian Pingstone
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Accession No.
Year
Date(s)
County
Location
Observers
Photos
Audio
Photo
 
 
 
 
23-88-33
23-88-33
1988
10/8/1988 - 10/9/1988
Arapahoe
Cherry Creek Reservoir
Steve Stachowiak, Jack Reddall, D. Martin
No
No
False
23-90-22
23-90-22
1990
4/14/1990
Boulder & Weld
Jim Hamm Res. & Union Res.
Mark Janos
No
No
False
1998-58
1998-58
1998
10/20/1998
Jefferson & Douglas
Chatfield Reservoir
Chris Wood
No
No
False
2000-50
2000-50
2000
10/9/2000
Adams
Barr Lake S.P.
Doug Faulkner, Tony Leukering
No
No
False
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