Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

Lesser Black-backed Gull intermedius NOS 4209546 6CY, September 22 2002, Le Portel, France (50°42'0''N, °34'0''E).

LBBG intermedius, ringed as pullus on July 09 1997, at Kjorten, Mandal, Vest-Agder, Norway.

Adult LBBG with P5 fully grown and P8-P10 still old. This bird was ringed in Norway. As soon as data about 4209546 are available, these will be added. Together with the primary moult, moult in the wing-coverts has started as well and the differences between the old and new feathers are obvious in the top image, in full sunlight. The upper three tertials have been replaced. The central greater coverts have been shed and expose the secondaries underneath (note the white fringes of the secondaries in the bottom image). The inner three greater coverts have been replaced. Note that the white secondary tips are almost entirely worn away and the grey centres are brown hued. Most of the median and lower lesser coverts has been replaced and in the lesser coverts a few old brown feathers can still be detected. The scapulars are a mix of old brown and new dark grey feathers. This is a typical intermedius In both jizz and primary moult stage.