Herring Gull- Zilvermeeuw (argentatus & argenteus)

(last update: December 15, 2011 )

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
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hg 2cy July
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hg 2cy November
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hg 3cy January
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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 January
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hg ad January
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hg ad December

Herring Gull (argenteus) NLA 6.169.423 4CY, December 08 2014, Katwijk, the Netherlands.

Ringed as pullus on July 13 2011 at Missouriweg, Maasvlakte Rotterdam, the Netherlands (51° 56' 32 N 4° 2' 36 E).

Mirror on P10. Last vestiges of immaturity on outer coverts. Much black on bill and pink base.