Adult Lesser Black-backed Gull Blue 4J – 20130529

7th-Calendar year Lesser Black-backed Gull (Larus fuscus graellsii – Dutch intermedius) with color ring Blue 4J. The primary moult has not yet started. Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J, with adult European Herring Gull (Larus argentatus argenteus). Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J, with adult European Herring Gull (Larus argentatus argenteus). Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J, with adult European Herring Gull (Larus argentatus argenteus). Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J, with adult European Herring Gull (Larus argentatus argenteus). Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J. Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J. Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J. Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J. Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J. Leiden, The Netherlands, 29 May 2013.

Lesser Black-backed Gull Blue 4J. Leiden, The Netherlands, 29 May 2013.

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