Lesser Black-backed Gull intermedius DKC 4L-5463 2CY, May 29 2017, Heemskerk, the Netherlands.
Intermedius from Denmark. Ringed as pullus on June 03 2016 at island Hirsholm, Frederikshavn, Denmark (57.48537 10.62388).
Advanced moult in winter, including upper tertials and inner coverts. Also several rectrices replaced.
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