Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

LBBG 3cy, August 22 2012, Katwijk, the Netherlands.

Probably intermedius, which on average has a more extensive moult on the wintering grounds. Last winter, about March-April most likely, this bird moulted all the rectrices and part of the inner secondaries.
Bird aged by outer secondary pattern, which is typical for old 2nd generation with such extensive brown centres, but in general this bird resembles 4cy. This summer, the complete moult started at P1; bird now in ctive complete summer moult. P5/P8.