Herring Gull- Zilvermeeuw (argentatus & argenteus)

(last update: December 15, 2011 )

Herring Gull - 3cy January

50 shades of grey - upperpart grey tones in gulls

Googling 'shades of grey', gulls may not be the first images turning up on your screen, and in fact and to much surprise, there may not be too many gulls in the story of the bestselling book. Still, the pictures are catching, even for the Dutch larophile and may juice the story below.
Several Nearctic species have been recorded in The Netherlands, like Ring-billed Gull, Bonapartes Gull and Franklin's Gull. Which species can be expected next? And which plumage may be the most rewarded to look for? Based on sightings of rare gulls in the Western Palearctic a list of species was created and birds were assigned to 5 groups. Every group contains rare species together with the most similar looking common species.


Siberian Rubythroath, Mongolia, René Pop. A very searched after rarity in The Netherlands, and in beauty, allure and thrill maybe approaching some of the gulls below.

First of all, of course one must at least have an open eye and open mind for identification, and not just ignore the mere possibility of a rare species to turn up on your local beach!


Ivory Gull adult, November 06 2010, California, USA, Brad Schram. Lets start to call this "grey tone = white"!

Ivory Gull is known to be attracted to corpses of e.g. dead seal, and it's a pity to see guards at the Dutch beaches quickly remove any dead mammal as soon as possible, to get a neat and clean beach again.


Ivory Gull adult, May 25 2007, Bering Sea, USA, Jomilo.


Ivory Gull juvenile, November 23 2012, Iceland, Bjarni.

Ivory Gull is an exceptional bird within a West European context, as it is the only gull with just a single moult in its annual cycle, while other species have a complete moult in summer and an additional partial moult in spring. Below is a picture of gull species plotted in annual cycli. Birds hatch halfway the calendar year (CY) and the white vertical lines indicate December 31, mid winter.

Some species, especially the smaller ones like Little Gull (top row) and Black-headed Gull (second row) attain adult plumage in 2 years (summer of their 3rd CY). Next rows illustrate the plumage development of Mediterranean Gull and Common Gull, species inwhich it takes 3 years to get the adult plumage. Lower rows illustrate Lesser Black-backed Gull, Herring Gull and Great Black-backed Gull.


Click image to see 4000 px width image, free to use (4,17 MB).

Group 1
Common Gull - Mew Gull - Ring-billed Gull

Group 2
Thayer’s Gull - Kumlien’s Gull - Iceland Gull

Group 3
Great Black-backed Gull - Kelp Gull - Slaty-backed Gull

Group 4
Glaucous-winged Gull - Glaucous Gull

Group 5
Herring Gull - American Herring Gull - Vega Gull

Group 1 50 shades of grey: Common Gull - Mew Gull - Ring-billed Gull

Common Gull Larus canus is an abundant winter visitor and common breeding species in The Netherlands. Two Nearctic gulls look quite the same, but can be identified in all plumages. Ring-billed Gull delawarensis is a very common and widespread species in Canada and the USA, Mew Gull brachyrhynchus is a bird of the north-west and has the main winter area along the West Coast. Due to distant breeding grounds and their migration routes, the latter species may not be a prime candidate for turning up at our beaches, but nonetheless there have been claims, e.g. a trapped bird at Klitmøller, Thy, Denmark in February 2010. Ring-billed Gull is an annual vagrant to Europe and several birds (returning birds in winter) have been well documented in the past.

When seen well, Ring-billed Gull is characteristic in adult plumage, showing:
- black ring on yellow bill
- yellow iris
- much black in wingtip, including broad sub-terminal band on P10
- small mirror on p10
- small white primary tips
- yellow legs
- pale grey upperparts, Kodak 4-5.


Ring-billed Gull delawarensis adult, April 2007, Toronto, Ontario, Canada (Wikipedia).

First cycle (first winter) Ring-billed Gull is a bird inbetween Common Gull canus and Herring Gull argentatus, especially female argenteus. Ring-billed Gulls first impression is a large Common Gull, od medium size with a pink-based bill and much contrast between back and wing-coverts. Like Comnmon Gull, they develop a grey back, 2nd gen scapulars in Herring Gull strongly patterned with anchor-shapes, and Ring-billed Gull may frequently replace wing-coverts in the post-juvenile moult (sse picture below, right bird), not replaced in Common Gull nor Herring Gull. Image below (left bird) shows the flat head and stronger bill than in Common Gull, and also the more chequered greater covert pattern (plain greater coverts in Common Gull, lacking barring and lining), but some Ring-billed Gulls may show plain greyish greater coverts as well, and remember when coverts have been replaced 2nd gen coverts are plain greyish as well.

Ring-billed Gull delawarensis 1st cycle, January 10 2013, Florida (Christine Dodding). Pink base of bill. Chequered pattern on greater coverts. Side of breast and flanks not clean, but chevron (arrow-head pattern) pattern on flanks.

Ring-billed Gull delawarensis 1st cycle, January 19 2013, Florida (Christine Dodding). Individual with many replaced median coverts, lower lesser coverts and lesser coverts. Pink base of bill. Chequered pattern on greater coverts very worn. Side of breast and flanks not clean, but chevron (arrow-head pattern) pattern on flanks.

Ring-billed Gull delawarensis 1st cycle, December 30 2012, Louisiana (Ronnie Maum). Pink base of bill. Plain grey on greater coverts. Proximal half of tail also with lining and spotting.

Ring-billed Gull delawarensis 1st cycle, December 30 2012, Louisiana (Ronnie Maum). Dense chevrons on flanks and side of breast. Chequered pattern on greater coverts. Proximal half of tail also with lining and spotting.

Common Gull canus 1st cycle, January 02 2011, Warmond, The Netherlands (Maarten van Kleinwee). Most of the scapulars replaced. Few dark markings on upper tail coverts, and tail with broad dark band.

Common Gull canus 1st cycle, January 29 2011, Leiderdorp, The Netherlands (Maarten van Kleinwee). Scapulars replaced, all wing feathers (coverts, tertials, secondaries and primaries) are first-generation, brown feathers. Especially the median and greater coverts look bleached.

Common Gull canus adult, April 19 2006, Bergen, Norway, (Frode Falkenberg). Dark iris. Mew Gull brachyrhynchus, June 14 2012, Denali NP, Alaska, (Glenda Suebee). Paler iris and slender, finer bill.

Adult summer Mew Gull probably is not the first plumage to be expected in The Netherlands. Therefore this page focus on Mew Gull brachyrhynchus vs Common Gull canus in 1st cycle, 2nd cycle and adult winter plumage. Below is a list of "classic" differences, which may be more prominent on one bird than it is on the other, so please always consider individual variation in either taxon.

Classic Common Gull canus in adult winter:
- very dark iris,
- band on bill,
- bill colour rather greenish yellow, not vivid yellow,
- leg colour rather greenish yellow, not vivid yellow,
- very delicate fine spotting 'often pencil streaking' on winter head,
- this spotting concentrated on crown and not in hindneck; also not running down to sides of breast (clean breast),
- short tongues op P10-P8,
- very large mirror on P10 often completely merged with white tip,
- large mirror on P9,
- sub-terminal black on P6 points upwards along outer edge of feather,
- often no or little black on P5,
- large white tips on outer primaries.

Classic Mew Gull brachyrhynchus in adult winter:
- speckled, but medium dark to paler iris,
- even in winter no band on bill,
- bill colour more vivid yellow,
- leg colour more vivid yellow,
- blotchy, mottled winter head,
- this mottling concentrated in hindneck (which sometimes solidly dark); also running down to sides of breast creating scally pattern,
- long tongues op P10-P8, tongue of P9 >50% of visible length,
- obvious white tongue tips 'string of pearls' with sharp division between white and grey on P8,
- medium-sized mirror on P10 often with complete sub-terminal band,
- small mirror on P9,
- black on P9 not reaching prmary coverts,
- sub-terminal black on P6 of evenly width, not upwards along outer edge of feather,
- often broad 'symmetric' black band of even width on P5,
- sometimes spot on outeweb of P4,
- outer primary tips becoming smaller outwards,
- inner primaries and all secondaries with large white tips.

EXTRA'S
- delicate small head on long-looking neck,
- delicate fine bill,
- slightly darker than Common Gull canus,
- P10 patterned like cachinnans, canus more like michahellis.

Common Gull canus SVS 7187947 10+CY, January 262013, Pas-de-Calais, France (Jean-Michel Sauvage). Classic Common Gull in winter, note very dark iris, obvious band on bill, bill colour rather greenish yellow, not vivid, same for leg colour, very delicate 'pencil streaking' on head, concentrated on crown and not in hindneck or running down to sides of breast, much white in wingtip with very large mirror on P10 visible.

Mew Gull brachyrhynchus adult, September 25 2006, Ship River, Anchorage, Alaska. (Greg Forcey). Mottled dark pattern on head, concentrated in hind neck, and continuing on breast. Small tips on outermost primaries and full broad sub-terminal band on P10. Yellow legs, yellow bill without black band, pale honey iris.

Common Gull canus NOS 5138897 18CY, November 26 2013, Boulogne-sur-Mer, France (Jean-Michel Sauvage). Classic Common Gull in winter, note very dark iris, band on bill, bill colour rather greenish yellow, not vivid, same for leg colour, very delicate 'pencil streaking' on head, concentrated on crown and not in hindneck or running down to sides of breast, much white in wingtip with very large mirror on P10 completely merged with white tip. Also large mirror on P9. No black on P5.

Mew Gull brachyrhynchus adult, February 26 2006, California, US. (Glen Tepke). Mottled dark pattern on head, concentrated in hind neck, and in this bird only slightly continuing on side of breast. Small tips on outermost primaries. Yellow legs, yellow bill without black band, pale iris.

Common Gull canus DEH IA052611 12CY, February 02 2013, Calais, France (Jean-Michel Sauvage). Very dark iris, band on bill, bill colour rather greenish yellow, not vivid, same for leg colour, very delicate 'pencil streaking' on head, concentrated on crown and not in hindneck or running down to sides of breast, much white in wingtip with very large mirror on P10 and large mirror on P9.

Mew Gull brachyrhynchus adult, January 16 2007, Broughton Beach, OR. (John Rakestraw). Mottled dark pattern on head, concentrated in hind neck, and continuing on breast. Small tips on outermost primaries and full broad sub-terminal band on P10. Yellow legs, yellow bill without black band, amber iris.

Common Gull canus EN58 adult, June 17 2010, Zoetermeer, The Netherlands (Maarten van Kleinwee). Dark iris, short tongues on outer primaries hardly visible on P8 from above. Black on P5 worn away. Black on P6 runs back upwards along outer edge of feather. No string of pearls (white tipped tongues).

Mew Gull brachyrhynchus adult, January 27 2010, Mercer Island, Washington (Dennis Cheasebro). Mottled dark pattern on head, concentrated in hind neck, and continuing on breast. Small tips on outermost primaries and full broad sub-terminal band on P10. Yellow legs, yellow bill without black band, amber iris. Slightly heavier billed bird, probably male.

Common Gull canus adult, January 02 2011, Warmond, The Netherlands (Maarten van Kleinwee). Mirrors on P9 and P10 (on both the inner and outer web). Short pale tongue on P8. Black on P6 running up along outer edge. Dark iris and bill band, neat fine streaking on head, not on breast.

Mew Gull brachyrhynchus adult, January 03 2012, Sayer's Park, Lake Washington (Amar Ayyash). Note very deep tongue on P8, and tongue >50% of length on P9. Black on P6 not running upwards along outer edge as in canus.

Common Gull canus adult, November 10 2012, Esbjerg, Denmark (Graham Ekins). Small mirror on P8 (not uncommon in canus). Short pale tongue on P8. Black on P6 running up along outer edge. Dark iris and bill band, neat fine streaking on head, not on breast.

Mew Gull brachyrhynchus adult, October 10 2008, Richmond, BC. (Punk Birder). White tongue tips (string of pearls) with sharp division between grey and white, black on P6 not running upwards along outer edge as in canus, deep tongue on P8.

Common Gull canus, adult, January 17 2013, Blennerville, Ireland (Vivian Wynne Philips). Dark iris, band on bill, short tongues on outer primaries.

Mew Gull brachyrhynchus adult, January 03 2012, Sayer's Park, Lake Washington (Amar Ayyash). Note white tongue tips (string of pearls) with sharp division between grey and white; black on P6 not running back upwards along outer edge as in canus; dense boa in the neck; large tips on secondaries and inner primaries.

IMMATURE PLUMAGES, COMPARISON OF CANUS (LEFT) AND BRACHYRHYNCHUS (RIGHT).

In first cycle (= 1st winter) birds, all flight feathers (tail, secondaries and primaries) are still juvenile; as winter progresses the only process to consider is wear and bleaching. Hence, patterns on primaries and especially tail remain the same throughout the period until a complete moult in summer will replace all these larger feathers.
Mew Gull in first cycle is easily told apart from Common Gull by tail, uppertail coverts and rump. Like in many American gull species, the tail is largely blackish, and uppertail coverts are densely barred. In resting birds the most eye-catching feature is the solidly patterned pale brown hindneck, this texture continues on the side of the breast and may sometimes be apparent on most of the underparts. Once the mantle and scapulars are replaced in Mew Gull, there will be a strong contrast between these new grey feathers and the brown "shawl". In Common Gull the hindneck may be brown as well, but this is often blotchy and showing stripes or scaly pattern.

Below some example birds, with Common Gull canus (left) and Mew Gull brachyrhynchus (right).

Common Gull canus 1st cycle, August 03 2013, Leiden, The Netherlands (Maarten van Kleinwee). Narrow black tail band, white on uppertail coverts and rump.

Mew Gull brachyrhynchus 1st cycle, September 28 2012, SSM Landfill, US. (Kirk Zufelt). Blackish tail, dense barring on uppertail coverts. Juvenile plumage.

Common Gull canus 1st cycle, December 07 2012, Leiden, The Netherlands (Maarten van Kleinwee). Narrow black tail band, white on uppertail coverts and rump.

Mew Gull brachyrhynchus 1st cycle, January 15 2011, Off San Luis Obispo County (Brad Schram). Blackish tail, texture connects hindneck with breast and belly, dense barring on uppertail coverts.

Common Gull canus 1st cycle, November 06 2011, Leiderdorp, The Netherlands (Maarten van Kleinwee). Scaly pattern on breast. Most scapulars replaced. Note broad pale tipped tertials. Spotted head pattern and hindneck.

Mew Gull brachyrhynchus 1st cycle, September 28 2012, SSM Landfill, US. (Kirk Zufelt). Blackish tail, dense barring on uppertail coverts. Juvenile plumage. Note thin fringes on tertials. Solid brown on hindneck and side of breast.

Common Gull canus 1st cycle, January 25 2009, Cascais, Carcavelos, Portugal. Picture: António A Gonçalves. Some 1st cycle Common Gulls get blotchy in the hindneck, but still there remains a spotting pattern, more obvious on the crown and ear coverts. Note much white in the tail.

Mew Gull brachyrhynchus 1st cycle, October 31 2011, Virginia Lake. (Kirk Zufelt). Very mottled texture connects hindneck with breast and belly. Broad bands on undertail coverts.

Common Gull canus 1st cycle, January 02 2011, Leiden, The Netherlands (Maarten van Kleinwee). Breast-pattern of first-cycle Common Gulls is quite variable: from pure white, dark-patterned flanks, to fully-dark breast and flanks as shown in this individual. However, dark hindneck not solid, no shawl, but striped and spotted.

Mew Gull brachyrhynchus 1st cycle, February 02 2011, Washington (Dennis Cheasebro). Blackish tail, texture connects hindneck with breast and belly, overall simple pattern (actually no pattern) on coverts. Note worn plumage.

Common Gull canus 2nd cycle, November 10 2012, Esbjerg, Denmark (Graham Ekins). Bill and and dark iris. 2nd winter canus may have head streaking more mottled and blotchy. Lacks black ink spots on tertials and tail.

Mew Gull brachyrhynchus 2nd cycle, February 21 2009, Dana Point, Orange Co. (John  Avise). Mottled dark pattern concentrated in hind neck, and slightly continuing on side of breast. No tips on outermost primaries. Ink spots in tail on tertial centra.

Common Gull canus  E91V 2nd cycle, January 12 2014, Utrecht, The Netherlands (Maarten van Kleinwee). Less white in primaries than full adult, immature markings in coverts and white tail.

Mew Gull brachyrhynchus 2nd cycle, February 04 2011, Richmond, BC. (Punkbirder). Ink spots on tertials.

Common Gull heinei 2nd cycle, January 2010, Copenhagen, Denmark (Kjeld Tommy Pedersen). Measurements indicate heinei. Heinei more often tend to show immature markings to a large extent in 2nd winter. Note elongated head and compare to rounded head and fine bill of Mew Gull.

Mew Gull brachyrhynchus 2nd cycle, January 03 2012, Sayer's Park, WA. (Amar Ayyash). Ink spots on tail, broad white tips on secondaries.

COMMON GULLS FROM THE EAST, SSP KAMTSCHATSCHENSIS AND HEINEI.

West European canus is replaced graudually in central Russia by slightly larger ssp heinei, and further east by the even bigger ssp kamtschatschensis. Especially large male heinei can be safely identified on measurements in the hand; and every winter bring at least a few heinei into our region, as confirmed by trapped bird by ringers. However, also in the field some heinei can be identified in a group of Common Gulls, based on careful examination of open wing differences between heinei vs canus. In general, the wingtip pattern for heinei has more pigmentation and the grey tone on upperparts is distinctly darker. Subbtle differences in adult plumage:
(i) heinei more often show a deep black full subterminal band on P5; where canus normally has a thin, uneven or broken band, or black only on one web.
Sometimes, adult heinei may show a black spot on the outer-web of P4;
(ii) in heinei, black pigmentation extends all the way to the primary coverts on P8, where canus only has this black reaching 50-75% of the primary;
(iii) heinei shows extensive black on P7 (more than 80% of the way to the primary coverts); while canus has mostly less than 50%;
(iv) in heinei a long black 'bayonet' on the outer web of P6 extends for approximately 65% of the way to the primary coverts, while the maximum in Chris Gibbin's canus sample is 53%, with most having black only 20-40%.

The overall result of these details is a wingtip that has a lot more black and less white than canus.

Common Gull kamtschatschensis 1st cycle, January 25 2012, Jinzhou Bay, China (Terry Townsend). Dark brown, well marked upperparts and barred uppertail coverts. Moult seems to be later than in ssp heinei.

Common Gull kamtschatschensis 1st cycle, January 25 2012, Jinzhou Bay, China (Terry Townsend). Dark, well marked underparts and strongly barred undertail coverts. Large stocky bird with stronger bill than Common Gull canus.

Common Gull kamtschatschensis 1st cycle, February 25 2011, Choshi, Japan (Clive Harris). Large stocky bird with stronger (and longer looking) bill than Common Gull canus. Common Gull kamtschatschensis 1st cycle, February 25 2011, Choshi, Japan (Clive Harris). Barred central uppertail coverts. Note broad tail-band and much dirty proximal vermiculation on all rectrices. Multiple barring on outerweb of R6.
Common Gull kamtschatschensis 1st cycle, February 25 2011, Choshi, Japan (Clive Harris). Overall brown, with barred central uppertail coverts. Note broad tail-band and proximal vermiculation on all rectrices. Common Gull kamtschatschensis 1st cycle, February 25 2011, Choshi, Japan (Clive Harris). Overall brown with limited replaced scapulars by February. Barred central uppertail coverts. Broad tail-band and proximal vermiculation on all rectrices.

Common Gull heinei 1st cycle, January 25 2012, Jinzhou Bay, China (Terry Townsend). Cleaner than kamtschatschensis, especially the uppertail immaculate white, and more advanced moult on the scapulars.

Common Gull kamtschatschensis? 2nd cycle, January 28 2012, Zhuanghe, China (Terry Townsend). Either kamtschatschensis or heinei. Large stocky bird with stronger bill than Common Gull canus. Moult seems to appear somewhat retarded compared to ssp heinei: still black markings in tail and on several secondary centres. Extensively brown in greater primary coverts. Many coverts have brownish fringes, which may proof to be a good feature of second winter kamtschatschensis.

Common Gull heinei adult, December 29 2012, Aktau, Kazakhstan (Kadirov Aisagali). Deep black full subterminal band on P5; black pigmentation extends all the way to the primary coverts on P8, extensive black on P7, in this bird there is a slight bayanoet on P7, not on P6.

Common Gull heinei adult, January 2010, Copenhagen, Denmark (Kjeld Tommy Pedersen). Measurements indicate heinei.

Common Gull kamtschatschensis adult, March 13 2010, Choshi, Japan (Goodhilda). Largest of the Common Gull subspecies, strong bird with attenuated rear end (P5 longer than tertial #3).

Common Gull kamtschatschensis adult, February 21 2010, Choshi, Japan (Goodhilda). Sloped forehead and longer bill may suggest Herring Gull at first glance, but Common Gull never develop a red gonys spot.

Common Gull heinei adult, June 02 2013, Novosibirskaya, Russia (Sergey Pisarevskiy). In this bird there is at least a bayonet on P6, and markings on P4. Very little white on underside of P10.

Common Gull kamtschatschensis adult, March 13 2010, Choshi, Japan (Goodhilda). No black band on the bill. Note deep pale tongue on P8 (about 75%); and tongue on P9 about 50% of feather length, measured from coverts.

Common Gull kamtschatschensis adult, January 29 2010, Choshi, Japan (Stu Price). Unlike the W European Common Gull canus, there is (hardly) no band on the bill in winter. Note large pale tongue tips.

Common Gull kamtschatschensis adult, June 21 2013, Kamchatka Coast, Russia (Benjamin van Doren). Large stocky bird with stronger bill than Common Gull canus. Black spot on P4 outerweb, full broad black sub-terminal band on both P5 and P10.

Common Gull kamtschatschensis adult, February 25 2011, Choshi, Japan (Clive Harris). No band on the bill. Note pale iris, yellow legs and yellow bill, and mottled brown in neck.

Common Gull kamtschatschensis adult, February 28 2011, Choshi, Japan (Clive Harris). Probably male, note almost Herring Gull like facial expression with long bill. Very broad band on P5.

Common Gull kamtschatschensis adult, February 25 2011, Choshi, Japan (Clive Harris). Only a hint of dark on lower mandible. Dark iris. Full sub-terminal bands on P9 and P10 and much black on P4.

Common Gull kamtschatschensis adult, February 25 2011, Choshi, Japan (Clive Harris). Only a hint of dark on lower mandible. Black spot on P4.

Common Gull kamtschatschensis adult, February 25 2011, Choshi, Japan (Clive Harris). Note dark iris, yellow legs and yellow bill lacking bill-band, and mottled brown in neck.

Common Gull kamtschatschensis adult, March 13 2010, Choshi, Japan (Goodhilda). Large; sloped forehead and longer bill may suggest Herring Gull at first glance, but no red gonys spot. Faded black on bill, full band on P5. Bare parts vivid yellow.

Common Gull kamtschatschensis adult, July 22 1992, Kamchatka, Russia (Steve Hampton). Male on left; female on right. Note grey-black division on P8: deep pale tongue on P8. Also, pale tongue tips on P5-P7.

Common Gull kamtschatschensis adult, July 22 1992, Kamchatka, Russia (Steve Hampton). Top: female Common Gull. Center: male Mew Gull. Bottom: male Kamchatka Gull. Note upperpart grey tone and size, but remember females (top) may be substantially smaller than males in (Common) Gulls.

Group 1
Common Gull - Mew Gull - Ring-billed Gull

Group 2
Thayer’s Gull - Kumlien’s Gull - Iceland Gull

Group 3
Great Black-backed Gull - Kelp Gull - Slaty-backed Gull

Group 4
Glaucous-winged Gull - Glaucous Gull

Group 5
Herring Gull - American Herring Gull - Vega Gull

rings argenteus: UK
2cy argenteus in July, ringed in the Netherlands. (103953 bytes)Herring Gull A7KW 3cy (argenteus), January 11 2012, Calais, France (50.42N 1.34E).
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull (argenteus) 3CY BTO GR-35599 January 23 2013, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
rings argenteus: Belgium
3cy argenteus in January, ringed in Belgium. (82676 bytes)Herring Gull H-112075 3cy (argenteus), January 05 2002, Boulogne/Mer, France (50.42N 1.34E).
3cy argenteus in January, ringed in Belgium. (84279 bytes)Herring Gull H-108929 3cy (argenteus), January 05 2002, Boulogne/Mer, France (50.42N 1.34E).
rings argenteus: Netherlands
2cy argenteus in March, ringed in France. (57822 bytes)Herring Gull (argenteus) 3CY E4 January 16 2013, Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
2cy argenteus in July, ringed in the Netherlands. (103953 bytes)Herring Gull 5.463.321 3cy (argenteus), January 08 2012, IJmuiden, the Netherlands.

3cy argenteus in January, ringed in the Netherlands. (68274 bytes)Herring Gull 5.417.498 3cy (argenteus), January 08 2009, Ijmuiden, the Netherlands.

3cy argenteus in January, ringed in the Netherlands. (68274 bytes)Herring Gull 5.363.361 3cy (argenteus), January 23 2003, Ijmuiden, the Netherlands.

rings argentatus: Norway
2cy argentatus in February, ringed in Russia. (84802 bytes)Herring Gull J2145 3cy (argentatus), January-February 2012, Scheveningen, Netherlands.
juvenile LBBG in October, ringed in Norway. (131273 bytes)Herring Gull J2701 3cy (argentatus), January 04 2012, Neeltje Jans, Zeeland, The Netherlands (51°36'58"N 003°41'32"E). Pictures: Pim Wolf.
juvenile LBBG in October, ringed in Norway. (131273 bytes)Herring Gull JN336 3cy (argentatus), January 09 2012, Neeltje Jans, Zeeland, The Netherlands (51°36'58"N 003°41'32"E). Pictures: Pim Wolf.
juvenile LBBG in October, ringed in Norway. (131273 bytes)Herring Gull JC98 3cy (argentatus), January 15 2008, Den Haag, the Netherlands. Picture: Ies Meulmeester.
rings argentatus: Finland
3cy argenteus in January, ringed in Finland. (80511 bytes)Herring Gull C033V 3cy (argentatus), January 15 2004, Lubna rubbish dump, Poland (52°02'N 21°08'E).
3cy argenteus in January, ringed in Finland. (71023 bytes)Herring Gull C253R 3cy (argentatus), January 13-15 2004, Lubna rubbish dump, Poland (52°02'N 21°08'E).
rings argentatus: Russia
3cy argentatus in January. (74361 bytes)Herring Gull KA80 3cy (argentatus), January 15 2004, Lubna rubbish dump, Poland (52°02'N 21°08'E).
1cy argenteus in November, ringed in Belgium. (25637 bytes)Herring Gull KV48 3cy (argentatus), January 2008, Boulogne/Mer, France.
unringed 3cy Herring Gulls
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 06 2012, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 23 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argenteus), January 06 2012, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 20 2012, Scheveningen, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 06 2012, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 20 2012, Scheveningen, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, 4cy & adult, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 06 2012, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 06 2012, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy, January 16 2013, Katwijk, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 20 2012, Scheveningen, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 20 2012, Scheveningen, the Netherlands.
3cy argentatus in January. (80207 bytes)Herring Gull 3cy (argentatus), January 04 2002, Boulogne/Mer, France (50.42N 1.34E).
3cy argentatus in January. (78094 bytes)Herring Gull 3cy (argentatus), January 04 2002, Boulogne/Mer, France (50.42N 1.34E).
3cy argentatus in January. (71812 bytes)Herring Gull 3cy (argentatus), January 03 2002, Boulogne/Mer, France (50.42N 1.34E).
3cy argentatus in January. (80362 bytes)Herring Gull 3cy (argentatus), January 04 2002, Boulogne/Mer, France (50.42N 1.34E).
3cy argentatus in January. (87966 bytes)Herring Gull 3cy (argentatus), January 04 2002, Boulogne/Mer, France (50.42N 1.34E).