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) CYAZ 2CY-5CY, January 2010 - January 2013, Koksijde, Belgium. Picture: Peter Adriaens.

Ringed as pullus in June 2009 at Zeebrugge, West-Vlaanderen, Belgium.

below: Herring Gull (argenteus) CYAZ 5CY, January 17 2013, Koksijde, Belgium. Picture: Peter Adriaens.

Dark centre on one lesser primary covert. Otherwise, no signs of immaturity.

below: Herring Gull (argenteus) CYAZ 3CY, May 22 2011, Koksijde, Belgium. Picture: Peter Adriaens.

below: Herring Gull (argenteus) CYAZ 3CY, April 10 2011, Koksijde, Belgium. Picture: Peter Adriaens.

No complete moult.

below: Herring Gull (argenteus) CYAZ 3CY, March 13 2011, Koksijde, Belgium. Picture: Peter Adriaens.

2nd gen flight feathers.

below: Herring Gull (argenteus) CYAZ 2CY, April 18 2010, Koksijde, Belgium. Picture: Peter Adriaens.

1st gen flight feathers. In first image: with MCAP.

below: Herring Gull (argenteus) CYAZ 2CY, March 05 2010, Koksijde, Belgium. Picture: Peter Adriaens.

1st gen flight feathers. In first image: with MCAP.

below: Herring Gull (argenteus) CYAZ 2CY, January 03 2010, Koksijde, Belgium. Picture: Peter Adriaens.

1st gen flight feathers.