Herring Gull - L. argentatus

Herring Gull- Zilvermeeuw (argentatus & argenteus) (last update: December 15, 2011 )
Coordinators: Jean-Michel Sauvage (France) Mars Muusse (the Netherlands) Home hg rings 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 - 3cy October Introduction This website deals with the Herring Gulls of the taxa argentatus and argenteus. Argenteus is an abundant breeding species on Iceland, Britain, NW France, Belgium, the Netherlands and N Germany. The taxon argentatus breeds in NE Europe, from Denmark, the coast of the Baltic Sea, Scandinavia and coast of the White Sea. In the centre of the breeding range (Denmark and the NW German coast), birds show intermediate characteristics, indicating there is a cline in argenteus-argentatus. Argenteus in Western Europe is pale-backed, slightly smaller and with relatively much black in the wing-tip; argentatus in the NE Europe is larger, slightly darker on upper-parts and show less black in the wing-tip. Due to the large breeding range, there is much intra-specific variation in argentatus, with most large, powerful birds in the northern populations, showing the most darkest upper-parts, longest wing and most white in the outer-wing. In this region, some populations may hold substantial number of yellow-legged argentatus. (referred to as "Finnmark yellow-legged argentatus"). In adult plumage, the black sub-terminal spot on P5 is often lacking or strongly reduced to a diffuse streak, broken at the centre. Sometimes P6 lacks black as well. In the Baltic region, other yellow-legged argentatus populations occur ("Baltic yellow-legged argentatus"), with adults showing even brighter yellow legs in summer and the upper-parts only slightly darker than West European argenteus, still much paler than Yellow-legged Gull (michahellis). Those Baltic argentatus often show a black sub-terminal spot on P5 in adult plumage. On these web-pages, we largely follow P.J. Grant: "Gulls, a guide to identification" and E.K Barth's publication as Contribution No. 86, Zoological Museum, University of Oslo: "The circumpolar systematics of Larus argentatus and Larus fuscus with special reference to the Norwegian populations".	rings argenteus: U.K.
		*Herring Gull BTO GC 89891 3cy (argenteus)*, October 01 2010, Boulogne/Mer, France (50.42N,1.34E). Picture: J-M Sauvage.
		*Herring Gull YR8.T 2cy-3cy (argenteus)*, May 2011 & October 2012, Boulogne/Mer, France . Picture: J-M Sauvage.
		rings argenteus: France
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		rings argenteus: Belgium
		*Herring Gull FLAH 3cy (argenteus)*, October 23 2009, Boulogne/Mer, France (50.42N,1.34E). Picture: J-M Sauvage.
		*Herring Gull H-107901 3cy (argenteus)*, October 18 2002, Westkapelle, the Netherlands (51.33N, 03.25E).
		rings argenteus: the Netherlands
		*Herring Gull BH sub-adult / 3cy (argenteus)*, October 22 2007, Westkapelle, the Netherlands.
		*Herring Gull YAFJ 3cy (argentateus)*, October 27 2010, Westkapelle, the Netherlands.
		*Herring Gull PCLZ 3cy (argenteus)*, September - October 2009, Westkapelle, the Netherlands.
		*Herring Gull 5.374.328 3cy (argenteus)*, October 25 2003, Amsterdam, the Netherlands. Photo Ruud Altenburg.
		*Herring Gull 5.424.828 3cy (argenteus)*, October 31 2011, IJmuiden, the Netherlands.
		*Herring Gull NLA 6166438 3cy (argenteus)*, October 22 2012, Scheveningen, the Netherlands.
		*hybrid HG x YLG EP30 3cy (argenteus* x michahellis)*, October 25 1999, Westkapelle, the Netherlands (51.33N, 03.25E). Picture by Pim Wolf. Known hybrid from the Netherlands (Neeltje Jans), ringed June 23 1997, offspring of male michahellis, (orange EAY8) and female argenteus*.
		rings argentatus: Denmark
		*Herring Gull V3T3 3cy (argentatus)*, October 28 2004, Westkapelle, the Netherlands (51.33N, 03.25E). Picture by Pim Wolf.
		rings argentatus: Russia
		Herring Gull KH89, 3cy (argentatus), October 31 2011, IJmuiden, the Netherlands.
		Herring Gull KY31, 3cy (argentatus), October 27 2010, Westkapelle, the Netherlands.
		unringed 3cy Herring Gulls
		*Herring Gull 3cy (argentatus),* October 11 2011, Scheveningen, the Netherlands.
		*Herring Gull (argenteus) 3cy,* October 07 2012, Noordwijk, the Netherlands. P9 fully grown.
		*Herring Gull (argenteus) 3cy,* October 09 2012, Katwijk, the Netherlands. Grey inner primaries. P10 almost fully grown.
		*Herring Gull 3cy (argenteus),* October 11 2011, Scheveningen, the Netherlands.
		Herring Gull 3cy, October 09 2012, Katwijk, the Netherlands. Grey inner primaries.
		Herring Gull 3cy, October 19 2012, Katwijk, the Netherlands. P10 fully grown with small mirror. With 2cy behind.
		Herring Gull 3cy, October 19 2012, Katwijk, the Netherlands. P10 fully grown with small mirror.
		Herring Gull 3cy, October 19 2012, Katwijk, the Netherlands. P10 fully grown.
		Herring Gull 3cy, October 19 2012, Katwijk, the Netherlands. P10 fully grown.
		Herring Gull 3cy, October 09 2012, Katwijk, the Netherlands. Grey inner primaries.
		Herring Gull 3cy, October 09 2012, Katwijk, the Netherlands. Grey inner primaries.
		Herring Gull 3cy, October 09 2012, Katwijk, the Netherlands. Grey inner primaries.

Herring Gull- Zilvermeeuw (argentatus & argenteus)

Herring Gull - 3cy October