Documentation of Iceland Gull

Observer Information

Reporter:  David Dowell  3721 Staghorn Dr,   Longmont, CO  80503
Other Observers:  none

Species, Date, Time and Location Information

Species:  Iceland Gull
First Date/Time:  4/20/2015 7:20:00 AM
Last Date/Time:  4/20/2015 7:30:00 AM
Duration (total time in view):  10 minutes
County:  Morgan
Specific Location:  Jackson Reservoir
Number:  1
Age:  Immature
Sex:  Unknown
Plumage:  Non-breeding


small pond near large lake

Viewing Conditions

Optics:  scope, binoculars, camera
Distance:  500 feet
Light:  cloudy

Description of the Bird

bird seen on pond with Ring-billed and Herring Gulls, ducks, and shorebirds, and then seen briefly in flight
larger than Ring-billed Gulls, smaller than Herring Gulls
gray mantle color similar to that of Ring-billed and Herring Gulls
small yellow bill with dark color towards the tip (consistent with third-cycle Kumlien's Gull)
hints of brownish color in upperwing coverts (also consistent with third-cycle Kumlien's Gull)
white head with no obvious streaking
iris color not discernible in cloudy conditions
folded primaries pale gray with white tips
very limited gray on primaries and white tail on bird in flight

Similar Species Discussion

Thayer's Gull would have much darker primaries.
Glaucous Gull would be larger, larger-billed, and with no gray 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


Notes made AFTER observation

Materials Available

Photographer: David Dowell

Photos |


Date Documentation Submitted

12/31/2015 10:29:00 AM
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Location Map

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