Lesser Black-backed Gull Y.AWZ 3CY, June 16-22 2013, Noordwijk, the Netherlands. Picture Ruud Altenburg & Maarten van Kleinwee.
Green Y.AWZ, ringed as pullus on July 04 2011 at IJmuiden, the Netherlands.
Advanced bird regarding moult, as it has fresh lower tertials, many greysih coverts and very limited black in the tail. It now has missing outer MC, indicating complete moult has started.
Next image show moult stage: all rectrices (except R5 left) replaced on winter grounds and also about 7 secondaries replaced. Complete moult started: P2/P5.
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