Lesser Black-backed Gull 2CY, May 09 2014, Katwijk, the Netherlands.
Classic 2CY graellsii type bird. All flight feathers still juvenile. All wing-coverts still juvenile, no feathers included in post-juvenile moult. Few upper scapulars greyish, 3rd generation. Note pale iris. Complete moult started: P1-P2 dropped, P3-P10 old juvenile; also reflected in wing-coverts with outer MC missing.
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