Yellow-legged Gull- Geelpootmeeuw (L. michahellis): 1cy August

(last update: 08 december 2003)

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Photo 1: Yellow-legged Gull 1cy August 25 2000, Boulogne-sur-Mer, France.  

By late August, Yellow-legged Gull has already moulted many mantle feathers and scapulars. Here, a new median covert has been replaced as well and a few new lesser coverts can be found in the lower lesser covert row. By late August, only a few Lesser Black-backed Gulls show this advanced moult, but Herring Gull would nearly never show this advanced strategy in the wing coverts (and moult these wing coverts as late as April next year). The bill is already slightly pale at the lower mandible, paler than suspected.
Note wear in the tertials, where central tertials almost lack the complete white fringe, only leaving the protruding shaft.