Photo 5308:
Yellow-legged Gull michahellis sub-adult,
October 03 2002, Le Portel,
France (50.43N,01.37E).
Primary P9
fully grown, P10 at the length of P9: PMS of 49. Note the very adult-like
coloration, but the outer primary-coverts show extensive brown-black in the
centres. Note also the black markings on the bill.
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