Herring Gull- Zilvermeeuw (argentatus & argenteus)
(last update:
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 January
hg sub-ad February
hg sub-ad March
hg sub-ad April
hg sub-ad May
hg sub-ad June
hg sub-ad July
hg sub-ad August
hg sub-ad September
hg sub-ad October
hg sub-ad November
hg sub-ad December
hg ad January
hg ad February
hg ad March
hg ad April
hg ad May
hg ad June
hg ad July
hg ad August
hg ad September
hg ad October
hg ad November
hg ad December
Herring Gull (argenteus) YAFM adult, 2010-2011 & 2015, IJmuiden, the Netherlands.
Local adult argenteus, ringed as breeding adult on the nest, at IJbunker - IJmuiden 04 May 2009.
The IJmuiden Ringing Team (Fred & Kees) ringed Herring Gulls and Lesser Black-backed Gulls at Forteiland, IJmuiden in 2008-2011, using green darvic rings, starting with Y for borh species (so codes read Y.xxx).
Early in the season (May), adults were caught at the nests and ringed, late June the juveniles were caught and ringed as well.
This page shows an example of birds from this IJmuiden project. All observations of ringed birds from this project can be sent to Kees Camphuysen at NIOZ, Texel (mail camphuys at nioz dot nl).
From June to December, adult argentatus undergo a complete moult resulting in so-called "winter
plumage". By August, the first
neat streaks can be found on the crown and hind-neck. After the complete moult is
finished by late autumn, the head will show extensive 'winter streaking', often
neat fine streaking in sub-adult argentatus.
By the end of the complete moult (sometimes mid-January in argentatus), the scapulars, mantle,
all the wing-coverts, rectrices and remiges will be replaced. From June onwards, the new plain grey wing-coverts are
moulted in, starting with the outermost median coverts.
Herring Gull (argenteus) YAFM adult, January 29 2010, IJmuiden, the Netherlands.
A female Herring Gull from the IJmuiden colour-ring program, ringed as adult on the nest, 04 May 2009 with clutch of 3 eggs. The orbital ring is yellow-orange, and there is some black on the bill. Both features are commonly found in western argenteus.
below: YAFM adult (argenteus), August 24 2010, IJmuiden, the Netherlands.
P5 fully grown.
below: YAFM adult (argenteus), September 23 2010, IJmuiden, the Netherlands.
P10 still old, P6 fully grown.
below: YAFM adult (argenteus), December 09 2010, IJmuiden, the Netherlands.
below: YAFM adult (argenteus), March 04 2011, IJmuiden, the Netherlands.
below: YAFM adult (argenteus), November 22 2015, IJmuiden, the Netherlands.
P10 growing.
below: YAFM adult (argenteus), December 03 2015, IJmuiden, the Netherlands.
P10 fully grown. Much black on bill. Black on outerweb of P5.
