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2cy Baltic Gull L f fuscus
1-2: © Ruud Altenburg, 11-07-2004. Amsterdam, Netherlands.
A very advanced looking, fuscus-like 2cy bird, that has replaced the tail and all secondaries. The wing coverts are unmarked and several blackish adult-like scapulars and coverts have appeared. The bill has already partly become yellow, as have the legs. However, the visible primaries are clearly brown (and pointed) and thus juvenile.
3-5: © Ruud Altenburg, 11-07-2004. Amsterdam, Netherlands.
Quite incredibly, a very similar individual was present simultaneously. Compared to the bird in plates 1-2 (and at the right in plate 3), the primaries look more worn, half of the secondaries have been replaced and the bill is even more adult-like, already showing a red gonys spot.
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