Lesser Black-backed Gull 3CY, July 18 2013, Katwijk, the Netherlands.
Unringed, hence no provenance about origin, but in all respects nice match to local "Dutch intergrade" Lesser Black-backed Gull.
Bird in complete moult: P3/P6. No secondaries but all tertials replaced on moult on winter grounds, and also all tail-feathers replaced on winter grounds for 3rd gen (except R5 right), now white with just single small black spots.
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