Lesser Black-backed Gull (graellsii & intermedius)

(last update: May 17 2015)

LBBG 3cy NLA 5.412.128June 25 2005, Amsterdam, the Netherlands. Picture Ruud Altenburg. 

3cy graellsii, ringed at IJmuiden. In many respects resembling 4cy birds, but note the black markings on the bill. Most of the upper-parts adult-like grey and the tail is white and already slightly worn at the tips. However, primaries bleached brown, second generation feathers without a mirror on P10. Dark iris.