Lesser Black-backed Gull graellsii (Dutch intergrade) 4CY NLA xxx3745 June 24 2013, Noordwijk, the Netherlands.
Sub-adult LBBG, probably 4CY bird. Note extensive pattern on secondaries, tail, and large dark markings on greater primary coverts. Small mirror on P10. Distinct adult-like pattern on P4-P5 indicate this bird is older than 3CY.
This bird is now in its complete moult: P1-P3 growing/missing, P4-P10 old.


|