Herring Gull- Zilvermeeuw (argentatus & argenteus)

(last update: December 15, 2011 )

Herring Gull - 2cy 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.


1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull A3CV 2cy (argenteus), October 06 2006, Boulogne/Mer, France. Pictures J-M Sauvage.
rings argenteus: France
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull HEA, 2cy (argenteus), October 19 2009, Boulogne/Mer, France (50.42N,1.34E). Picture: J-M Sauvage.
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull B309 2cy (argenteus), October 01 2010, Boulogne/Mer, France. Pictures J-M Sauvage.
rings argenteus: Belgium
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull CHAW 2cy (argenteus), October 01 2009, Westkapelle, the Netherlands.
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull FSAT 2cy (argenteus), October 22 2007, Westkapelle, the Netherlands.
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull SCAZ 2cy (argenteus), July & October 2012, Calais & Boulogne/Mer, France (50.42N,1.34E). Picture: J-M Sauvage.
2cy argenteus in October, ringed in Belgium. (56759 bytes)Herring Gull H-113894 2cy (argenteus), October 24 2002, Boulogne/Mer, France (50.43N 01.37E).
2cy argenteus in October, ringed in Belgium. (73914 bytes)Herring Gull H-1174xx 2cy (argenteus), October 18 2002, Westkapelle, the Netherlands (51.33N 03.25E).
2cy argenteus in October, ringed in Belgium. (75409 bytes)Herring Gull H-117777 2cy (argenteus), October 04 2002, Boulogne/Mer, France (50.43N 01.37E).
2cy argenteus in October, ringed in Belgium. (77732 bytes)Herring Gull H-117779 2cy (argenteus), October 24 2002, Boulogne/Mer, France (50.43N 01.37E).
2cy argenteus in October, ringed in Belgium. (88842 bytes)Herring Gull H-117748 2cy (argenteus), October 24 2002, Boulogne/Mer, France (50.43N 01.37E).
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull H-146945 2cy (argenteus), October 09 2005, Westkapelle, the Netherlands (51.33N 03.25E).
rings argenteus: Netherlands
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Herring Gull YALP 2cy (argentateus), October 14 2010, Westkapelle, the Netherlands.
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Herring Gull YAZU 2cy (argentateus), October 01 2012, Westkapelle, the Netherlands.
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Herring Gull 2cy 4Z (argenteus) October 01 2009, Westkapelle, the Netherlands.
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Herring Gull US 2cy (argenteus), October 31 2009, Barneveld, the Netherlands.
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Herring Gull XA 2cy (argenteus), October 26 2007, Westkapelle, the Netherlands (51.33N 03.25E). Picture Pim Wolf.
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull X3 2cy (argentateus), October 05 2005, Westkapelle, the Netherlands.
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Herring Gull E514E 2cy (argenteus), October 19 2002, Moustafabaai - Maasvlakte, the Netherlands (51.58N 04.02E).
2cy argenteus in October, ringed in the Netherlands. (78785 bytes)Herring Gull 5.365.172 2cy (argenteus), October 19 2002, Brouwersdam, the Netherlands (51.45N 03.52E).
2cy argenteus in October, ringed in the Netherlands. (54814 bytes)Herring Gull 5.365.836 2cy (argenteus), October 04 2002, Boulogne/Mer, France (50.43N 01.37E).
juvenile LBBG in October, ringed in Norway. (131273 bytes)Herring Gull 5.412.869 2cy (argenteus), October 09 2005, Westkapelle, the Netherlands.
adult argenteus in October, ringed in the Netherlands. (35116 bytes)Herring Gull 5.429.322 2cy (argenteus), October 16 2011, IJmuiden, the Netherlands.
2cy argenteus in July, ringed in the Netherlands. (103953 bytes)Herring Gull 5.463.321 2cy-3cy (argenteus), October 16 2011, IJmuiden, the Netherlands.
Seen on several occassions.
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull NLA 6169253 2cy (argenteus), October 22 2012, Scheveningen, the Netherlands.
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull NLA 6169296 2cy (argenteus), October 22 2012, Scheveningen, the Netherlands.
rings argentatus: Helgoland / Germany
2cy argenteus in October, ringed in the Germany. (50413 bytes)Herring Gull 4238828 2cy (argenteus), October 11-17 2002, IJmuiden, the Netherlands (52.27N 04.33E).
rings argentatus: Norway
2cy argentatus in October, ringed in Norway. (118370 bytes)Herring Gull FA22132 2cy (argentatus), October 26 2007, Westkapelle, the Netherlands.
2cy argentatus in October, ringed in Norway. (118370 bytes)Herring Gull x22181 2cy (argentatus), October 21 2004, Westkapelle, the Netherlands (51.33N 03.25E). Picture Pim Wolf.
rings argentatus: Russia
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull RUM ES010055 2cy (argentatus), October 29 2007, Westkapelle, the Netherlands. Picture: Pim Wolf.
rings argentatus: Poland
2cy argenteus in October, ringed in the Netherlands. (78696 bytes)Probable hybrid 260P 2cy (argentatus x cachinnans), October 23-30 2008, Westkapelle, the Netherlands.
unringed 2cy Herring Gulls
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull (argenteus) 2cy, October 07 2012, Noordwijk, the Netherlands. P10 almost fully grown.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed. With juvenile (left).
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands.P10 almost fully grown. Secondary moult almost completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 19 2012, Katwijk, the Netherlands. P10 growing.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 19 2012, Katwijk, the Netherlands. P10 growing.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 fully grown. Secondary moult completed. Micha-like pattern.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 almost fully grown. Secondary moult almost completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 fully grown. Secondary moult completed.
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull 2cy, October 09 2012, Katwijk, the Netherlands. P10 fully grown. Secondary moult completed.
2cy argenteus in October. (82743 bytes)Herring Gull 2cy (argentatus), October 11 2011, Scheveningen, the Netherlands.
2cy argenteus in October. (82743 bytes)Herring Gull 2cy (argentatus), October 11 2011, Scheveningen, the Netherlands.
probably 2cy argenteus x graellsii in October. (75441 bytes)possible hybrid Herring Gull x Lesser Black-backed Gull 2cy (argenteus x graellsii), October-December 1999, Westkapelle, the Netherlands (51.33N 03.25E). Pictures by Pim Wolf.