Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Herring Gull argentatus X032 1CY-2CY, October 2016 - January 2017, Den Haag & Katwijk, the Netherlands. Picture: Ted van der Knaap & Mars Muusse.

Ringed as pullus in 2016 in Germany.
Herring Gull yellow X032 and metal Hiddesee DEH EA-202432 ringed as pullus on June 07 2016 at Laußig, Sachsen, Germany (51.34N, 12.38E). Location holds a mixed colony of argentatus and cachinnans mostly.

26.09.2016 - Den Haag, the Netherlands (52.05N, 4.19E).
30.10.2016 - Den Haag, the Netherlands (52.05N, 4.19E), Ted van der Knaap.
16.11.2016 - Katwijk, the Netherlands (NL 5.213,00 N 424,00 E), Mars Muusse.
20.01.2017 - Scheveningen, the Netherlands (52.07N, 4.17E), Mars Muusse.

Herring Gull argentatus X032 2CY, January 20 2017, Scheveningen, the Netherlands.

Strong dominance of argentatus: retarded moult, underpart flecking, tertial pattern, gonys angle, head shape and streaked head.
US=75-99%, LS=75-99%, TOTSCAPS=75-99%. All coverts and tertials still juvenile.

Herring Gull argentatus X032 1CY, November 16 2016, Katwijk, the Netherlands.

US: 50-75%, LS: 25-50%, TOTSCAPS: 25-50%. Coverts and tertials juvenile, except for 1x central MC.

Herring Gull argentatus X032 1CY, October 30 2016, Den Haag, the Netherlands. Picture: Ted van der Knaap.