Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull 3CY, April 05 2015, IJmuiden, the Netherlands.

P1-P10 old 2nd generation, P10 with small mirror; 2nd generation flight feathers, simliar to juvenile pattern but with finer spots and more vermiculated. This bird lacks the grey saddle (few grey feathers though), combined with brown inner primaries. Vermiculated marbling pattern on greater coverts. Two-coloured bill and pale iris.