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 argenteus BLB H-161236 July 2010 & October 2014, Le Portel, NW France. Picture: Maarten van Kleinwee & Jean-Michel Sauvage.

Ringed as juvenile on June 27 2009 at Zeebrugge, Belgium.

Herring Gull argenteus BLB H-161236 6CY, October 18 2014, Le Portel, NW France. Picture: Jean-Michel Sauvage.

P9 fully grown. P10 at 3/4. PMS=49. White tip on P10 merged with mirror (broken black band), small mirror on P9.

Herring Gull argenteus H-161236 2CY, July 19 2010, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.

Second-calendar year Herring Gull, moulting to second-winter plumage. The tertials and all wing coverts are replaced by second-generation feathers, and have a blocked pattern (some still show a buffish-yellow tinge). The rounded tip of a second-generation primary (P7 fully grown) is extruding the tertials and contrasts with the more pointed first-generation P10 which is a faded brown. The base of the bill is pink; the head is light with dark streaks, the eye spot is dark. The breast, underbody and flanks are white with dark barring. The legs are pink.