photo
7337: Yellow-legged Gull michahellis 3cy, August 09 2003, Etaples,
France (50.42N,1.34E).
In 3cy birds, the old second generation
flight-feathers are replaced by new, more adult-like third generation
feathers. This is most obvious in the (outer) primaries. The old second
generation P10 is brown, abraded and will be replaced by glossy-black
fresh third generation P10 showing an obvious mirror. The primary moult
stage in this bird: P8-10 are old
second generation and P5 is full-grown. Note also the adult-like
coloration of the bare parts, with clear yellow legs, yellow iris and
adult-like bill pattern, much more advanced than average 2cy in August.
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