Coordinators:
Alvaro Jaramillo
John Cant
Mars Muusse
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1cy June
1cy July
1cy Aug
1cy Sept
1cy Oct
1cy Nov
1cy Dec
2cy Jan
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2cy April
2cy May
2cy June
2cy July
2cy Aug
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2cy Nov
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3cy Jan
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3cy March
3cy April
3cy May
3cy June
3cy July
3cy Aug
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3cy Oct
3cy Nov
3cy Dec
4cy / sub-ad Jan
4cy / sub-ad Feb
4cy / sub-ad March
4cy / sub-ad April
4cy / sub-ad May
4cy / sub-ad June
4cy / sub-ad July
4cy / sub-ad Aug
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4cy / sub-ad Nov
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adult Jan
adult Feb
adult March
adult April
adult May
adult June
adult July
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Western Gull occidentalis 2nd cycle (3CY), July 16 2012, Commercial Wharf, Monterey, Monterey Cty., California, USA. Picture: John Cant.
Complete moult: most coverts replaced already. Probably P5 shed, P6-P10 old 2nd gen. Note the "shadow-pring" on the outer primaries, the darker brown areas on the primaries were protected from sun radiation by the previous feather on top of it.
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glaucescens Glaucous-winged Gull & Western Gull occidentalis