glaucescens Glaucous-winged Gull & Western Gull occidentalis(last update:
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Coordinators: 1cy June 2cy Jan 3cy Jan 4cy / sub-ad Jan adult Jan |
Western Gull occidentalis 1st cycle (2CY), April 26 2017, Monterey, California, USA. Picture: John Cant.Difficult to age. Combination of brown wing-coverts with greyish back, extensive pale bill-base and rather pale underparts, may suggest 2nd cycle, but all coverts and tertials seem to be equally old, much resembling 1st cycle birds. Altogether probably advanced 1st cycle with several grey scaps. |