Images of first-calendar year European Herring Gulls, seen at the landfill of Blaringhem, France, 24 – 28 October 2016.
All were ringed in the Netherlands as pullus (unless otherwise stated) and show standard plumage characteristics for this species and age.
Green 0=
Green 5X
Green 6V
Green 21
Yellow A//R
Ringed as a first-calendar year, origin unknown.