Lesser Black-backed Gull (graellsii & intermedius)

(last update: 22-2-2011)

LBBG 3cy November 02 2002, Westkapelle, the Netherlands.

P10 is still present, while P9 is almost fully grown. This bird shows a somewhat advanced upper-part coloration and an all-white tail. However:

• Much black on the bill, combined with a pinkish base;
• New tertials show a black shaft-streak with an extensive dark base at the centre;
• Primaries P6-P9 show very small or almost no white tips;
• The old P10 is very worn, but a mirror seems to be lacking, as is common in second generation P10.