Coordinators:
John Cant
Mars Muusse
Index ORG
ring projects
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1cy June
1cy July
1cy Aug
1cy Sept
1cy Oct
1cy Nov
1cy Dec
2cy Jan
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adult Jan
adult Feb
adult March
adult April
adult May
adult June
adult July
adult Aug
adult Sept
adult Oct
adult Nov
adult Dec |
Heermann's Gull heermannii sub-adult?, July 15 2016, Half Moon Bay, California USA. Picture: John Cant.
P5/P8. Active moult in outer secondaries and in rectrices as well. Ols secondaries lack white tips, which may indicate immaturity.
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Heermann's Gull heermannii