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 adult NLA 5.425.462 (argenteus) September 2011 & April 2016, IJmuiden, the Netherlands.

Ringed as 4+cy bird on July 01 2010 at IJmuiden harbour, The Netherlands. Bird was taken into care for a while and then released with ring. In 2016 it appeared to be territorial in IJmuiden harbour, so probably a local bird.

below: Herring Gull adult NLA 5.425.462 (argenteus), April 06 2016, IJmuiden, the Netherlands. Picture: Mars Muusse.

below: Herring Gull adult NLA 5.425.462 (argenteus), April 01 2016, IJmuiden, the Netherlands. Picture: Mars Muusse.

Thayeri pattern on P9 and P10.

below: Herring Gull adult NLA 5.425.462 (argenteus) September 11 2011, IJmuiden, the Netherlands. Pictures: Maarten van Kleinwee.

Adult Herring Gull moulting to winter (basic) plumage. P6 / P10.