Herring Gull (argentatus & argenteus)

(last update: February 11, 2013)

Coordinators:
Jean-Michel Sauvage (France)
Mars Muusse (the Netherlands)

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Herring Gull plumages:

HG 1cy July
HG 1cy August
HG 1cy September
HG 1cy October
HG 1cy November
HG 1cy December

HG 2cy January
HG 2cy February
HG 2cy March
HG 2cy April
HG 2cy May
HG 2cy June
HG 2cy July
HG 2cy August
HG 2cy September
HG 2cy October
HG 2cy November
HG 2cy December

HG 3cy January
HG 3cy February
HG 3cy March
HG 3cy April
HG 3cy May
HG 3cy June
HG 3cy July
HG 3cy August
HG 3cy September
HG 3cy October
HG 3cy November
HG 3cy December

HG sub-ad Jan.
HG sub-ad Feb.
HG sub-ad March
HG sub-ad April
HG sub-ad May
HG sub-ad June
HG sub-ad July
HG sub-ad Aug.
HG sub-ad Sept.
HG sub-ad Oct.
HG sub-ad Nov.
HG sub-ad Dec.

HG adult January
HG adult February
HG adult March
HG adult April
HG adult May
HG adult June
HG adult July
HG adult August
HG adult September
HG adult October
HG adult November
HG adult December

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.

Recoveries:
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.