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 sub-adult, December 12 2016, Pt. Pinos, Pacific Grove, Monterey Cty., California, USA. Picture: John Cant.Classified 'sub-adult' (4th or 5th cycle); overall much adult-like but faint streaking of winter head and black line at culmen, and - best feature - black in the tail indicate younger adult bird. Note large white tips on outer primaries. |