photo 5397: Yellow-legged
Gull michahellis adult, October 03 2002, Etaples, France
(50.44N,01.35E).
Another individual with a diffuse black band on
the bill, but this is not necessarily related to sub-adultness. The outer
primary-coverts appear all grey, as in adults. Primary P8 is fully grown, P9 is
at the length of P6 and the PMS is 46.
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