Documentation of
Iceland Gull
2015-134
Observer Information
Reporter:
David Dowell
3721 Staghorn Dr,
Longmont,
CO 80503
E-mail:
dave1wx@gmail.com
Other Observers:
none
Species, Date, Time and Location Information
Species:
Iceland Gull
First Date/Time:
12/18/2015 3:50:00 PM
Last Date/Time:
12/18/2015 4:30:00 PM
Duration (total time in view):
10 minutes
County:
Arapahoe
Specific Location:
Aurora Reservoir
Number:
1
Age:
Adult
Sex:
Unknown
Plumage:
Non-breeding
Habitat
large reservoir near landfill
Viewing Conditions
Optics:
scope, binoculars, camera
Distance:
as close as 300 feet
Light:
full sun late in the day, bird viewed from multiple angles
Description of the Bird
bird seen on water with Ring-billed Gulls, Herring Gulls, and Canada Geese, and then seen in flight
size between that of Ring-billed and Herring Gulls
gray color of upperparts similar to that of Ring-billed and Herring Gulls
"dainty" appearance with "cute" round head
pale iris (comparable to Ring-billed Gulls)
small yellow bill with red gonys spot
some streaking on head and neck
folded primaries mostly white with some pale/medium gray markings (somewhat washed out in photos)
wingtips in flight mostly pale with very limited gray along edges and near tips of primaries
bird looked much like that in Howell and Dunn's photo 35A.5
Similar Species Discussion
Thayer's Gull would have dark iris and black markings on primaries.
Glaucous Gull would be larger, larger-headed, larger-billed, and with no gray markings on primaries.
Resources Used
Howell and Dunn Gulls of the Americas
Sibley Guide to Birds
Previous Experience
four years of experience observing gulls, including Iceland (Kumlien's), Thayer's, and Glaucous Gulls
Notes
Notes made DURING observation
Date Documentation Submitted
12/23/2015 9:20:00 AM
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