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Coordinators: 1cy June 2cy Jan 3cy Jan adult Jan |
Ring-billed Gull delawarensis adult, March 17 2013, Mendon, Utah. Picture: Ryan O'Donnell.See Ryan's blog. In contrast to California Gull, this Ring-billed Gull has much paler inner primaries and outer secondaries, which contrast less than on the California Gull. Some slight contrast is still evident, so it might take some practice in the field to get a feel for this field mark. Ring-billed Gulls also tend to have less black in the primaries, but there is some overlap in this trait so it should be used only as a supporting character.
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delawarensis Ring-billed Gull