Lesser Black-backed Gull 2CY, May 29 2017, Heemskerk, the Netherlands.
Set of unringed birds, no provenance on origin. All rather classic graellsii-type 2CY bird.
Complete moult started in most birds: P1-P2 missing is the standard for late May; some birds more advanced (like P1-P3 growing), and only retarded birds still have P1-P10 old.
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