Coordinators:
John Cant
Mars Muusse
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Heermann's Gull heermannii adult? PB moult, August 15 2012, Monterey, California USA. Picture: John Cant.
P8-P10 old. Old secondaries have worn, small white tips (heavy wear or sign of immaturity?). Lack of bold white tips on rectrices may point to bird in PB3 moult, or just heavily worn feathers as well?
Spotting on head match adults, in the hrey tome and rather sparsly distributed.
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Heermann's Gull heermannii