Lesser Black-backed Gull- Kleine Mantelmeeuw (graellsii & intermedius)

(last update: 28-2-2011)

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LBBG rings

lbbg 1cy May
lbbg 1cy June
lbbg 1cy July
lbbg 1cy August
lbbg 1cy September
lbbg 1cy October
lbbg 1cy Nov - Dec

lbbg 2cy Jan-Febr
lbbg 2cy Mar-April
lbbg 2cy May
lbbg 2cy June
lbbg 2cy July
lbbg 2cy August
lbbg 2cy September
lbbg 2cy October
lbbg 2cy Nov - Dec

lbbg 3cy Jan-April
lbbg 3cy May
lbbg 3cy June
lbbg 3cy July
lbbg 3cy August
lbbg 3cy September
lbbg 3cy October
lbbg 3cy Nov - Dec

lbbg sub-ad Jan-April
lbbg sub-ad May
lbbg sub-ad June
lbbg sub-ad July
lbbg sub-ad Aug
lbbg sub-ad Sept
lbbg sub-ad Oct
lbbg sub-ad Nov - Dec

lbbg ad January
lbbg adult February
lbbg adult Mar-April
lbbg adult May
lbbg adult June
lbbg adult July
lbbg ad August
lbbg ad September
lbbg ad October
lbbg ad Nov - Dec

third calendar year: January - April

During April only the very first of 3cy birds return to the colony. The first arrive around mid-April, the majority around mid-May in the Netherlands. They join the adults arriving as early as possible to find the best breeding spots in last years colonies. The counted maximum number of 3cy’s estimates 100 (mid-May), on the total of 1.500 LBBG present at the Maasvlakte, the Netherlands. Higher numbers can be found on the wintering grounds (Portuguese coast and in S France) or at the stop-over places (e.g. Pas-de Calais). 

moult stage in typical 3cy LBBG: 
It is important to distinguish between 'typical' 3cy LBBG and advanced birds. The activity in moult during April is virtually zero in typical LBBG, what has long been considered typical graellsii. In these typical birds, there has been no moult on the wintering grounds and returning 3cy birds in spring show more or less the same plumage as the plumage of 2cy October birds. They have a worn second generation tail, i.e. a tail with a black, broad sub-terminal tail-band, which has been required last autumn in the complete moult. Some birds will start or have started moulting some of the tail-feathers by April. The primaries are slightly worn at the tips, but still all second generation. 
Otherwise, these typical 3cy birds still show brownish second generation wing-coverts (greaters and lessers at least) while upper-parts and bare parts look very adult-like, resulting in the well-known "grey saddle" in 3cy LBBG in spring.

moult in advanced 3cy LBBG: 
By April, groups of 3cy LBBG increasingly include advanced birds, most obvious advanced in the upper-parts and wing-coverts. It's not uncommon to find 3cy LBBG with recently replaced wing-coverts in April, indicating that these feathers have been replaced on the wintering grounds, during the last months. Such birds may show complete adult-like upper-parts and the dark grey-tone of the new scapulars and coverts suggest they may origin from intermedius colonies. However, they may also return in Dutch colonies, as this image shows. It is worth checking the tail, secondaries and primaries in such birds, as advanced partial moult in the upper-parts may correlate with moult in these tracts as well. 

tail-feather & primary moult in advanced LBBG:
Most commonly seen at this age now, is a worn second generation tail. But remember that quite some 2cy LBBG return in NW Europe with second generation tail-feathers in spring, and renew these tail-feathers in a second wave in the complete summer moult. Consequently, such birds may already show an almost complete white tail by October in second calendar year (see here). Therefore, it is possible that 2cy LBBG leave NW Europe with already a white tail and show white tails in spring again.

3cy LBBG in spring may include tail-feathers in the partial spring moult again, and may still be actively replacing rectrices in April (see e.g. this image). About 30% of the 3cy LBBG have moulted one or more tail feathers by the end og April, giving them the blocked pattern of white (third or fourth generation feathers) and partial black tail-feathers. The partial moult involves rectrices randomly, creating an unpredictable black and white tail in spring.  

At the end of April only the very advanced birds have started the complete moult and have shed P1. The ordinary moult-sequence of the secondaries start when P6 is almost fully grown, by mid-summer. But here again, primaries and secondaries may be included in the partial moult on the wintering grounds. This image nicely illustrates arrested primary moult in spring 3cy LBBG. On the wintering grounds, partial moult must have been very extensive in the upper-parts, as almost all wing-coverts are very adult-like. In this extensive moult, the inner primaries were moulted as well, just as most of the tail-feathers.

In this respect, the western taxa intermedius and graellsii LBBG may resemble eastern fuscus., which very commonly replaced remiges and rectrices on the wintering grounds.

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3cy LBBG graellsii from the UK
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2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy F1J March 15 2009, Madrid, Spain. Picture: Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy 6XF March 09 2006, Madrid, Spain. Picture: Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy 6T5 October 02 2010, Quarteira, Faro, Portugal & February 15 2012, Tanji, The Gambia. Photo's: Michael Davis & Clive Barlow. Active primary moult!!!
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy CSU April 02 2006, Madrid, Spain. Picture: Delfín González. Also as 6cy.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy UNH February 26 2006, Madrid, Spain.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy 4XF February 11 2007, Madrid, Spain. Picture: Delfín González. Also as 4-5cy Febr.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy 3NF March 28 2009, Madrid, Spain. Photo by Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy ACN April 06 2008, Madrid, Spain. Picture: Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy CCE January 11 2009, Madrid, Spain. Picture: Delfín González. Also seen as Dec 3cy.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy D:Z February 26 2006, Madrid, Spain. Picture: Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG M:J March 20 & June 29 2006, Spain & Belgium. Picture: Delfín González & Marc Fasol. Seen again in Belgium, March & June 2006.
LBBG 3cy W0NJ March 30 2006, Westkapelle, the Netherlands. Picture Pim Wolf.
LBBG 3cy WB3X March 02 2008, Madrid, Spain. Photo by Delfín González.
LBBG 3cy R0PD April 01 2007, Madrid, Spain. Photo by Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy R6PJ March 09 2008, Madrid, Spain. Photo by Delfín González.
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3cy LBBG graellsii "Dutch intergrade" from France
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juvenile LBBG, ringed in the Netherlands. LBBG 3cy 820N March 14 2010, Madrid, Spain. Photo by Delfín González.
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3cy LBBG graellsii "Dutch intergrade" from Belgium
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2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy DPAS April 08 2008, Madrid, Spain. Picture: Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy HHAS January 02 2010, Madrid, Spain. Picture: Delfín González.
juvenile LBBG in October, ringed in Norway. (131273 bytes)LBBG 3cy BLB L-111037 April 22 2006, Dordrecht, the Netherlands.
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3cy LBBG graellsii "Dutch intergrade" from the Netherlands
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2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy K.NAZ January 05 2009, Madrid, Spain. Picture: Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy E471 February 25 2007, Madrid, Spain. Photo by Delfín González.
Lesser Black-backed Gull 3cy Y8 April 14 2012, Outreau-Boulogne, NW France. Picture: Jean-Michel Sauvage.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy YF March 29 2009, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy XZ January 05 2009, Madrid, Spain. Photo by Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG KD March 2008 - March 2009, Madrid, Spain. Picture: González & Martin.
2cy Dutch LBBG in February. (79773 bytes)LBBG JG April 2008 - March 2009, Madrid, Spain. Picture: González & Martin.
2cy Dutch LBBG in February. (79773 bytes)LBBG GZ January 18 2009, Madrid, Spain. Picture: Delfín González. Also seen as 2cy Nov.
2cy Dutch LBBG in February. (79773 bytes)LBBG GN April 05 2009, Madrid, Spain. Picture: Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG FP January 04 2009, Madrid, Spain. Picture: Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy D7 January 18 2009, Madrid, Spain. Photo by Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy SV March 29 2009, Madrid, Spain.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy UH January 18 2009, Madrid, Spain.
2cy Dutch LBBG in February. (79773 bytes)LBBG 3cy 8C January 02 2010, Madrid, Spain. Picture: Delfín González. Also as 2cy Febr.
LBBG 3cy NLA 6.125.099 March 26 2006, Dordrecht, the Netherlands.
LBBG 3cy NLA 5.412.239 April 14 2006, Dordrecht, the Netherlands.
2cy graellsii in October, ringed in the Netherlands. (123735 bytes)LBBG 3cy NLA 5.414.454 January 21 2006, Amsterdam, the Netherlands.
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3cy LBBG graellsii - intermedius from N Germany
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2cy Dutch LBBG in February. (79773 bytes)LBBG H3E2 March 04 2012, Madrid, Spain. Picture: Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG HR22 January 15 20912, IJmuiden, the Netherlands.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy H560 March 15 2009, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy H66H February 25 2007, Madrid, Spain. Photo by Delfín González.
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3cy LBBG intermedius from Denamrk
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juvenile LBBG, ringed in the Netherlands. LBBG 3cy V4PE March 30 2008, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy V398 January 09 2010, Madrid, Spain. Photo by Delfín González.
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3cy LBBG intermedius from Norway
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2cy Dutch LBBG in February. (79773 bytes)LBBG J3R1 February 21 2009, Anza-Agadir, Morocco. Picture: Morten Helberg.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy J0JK March 24 2008, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 3cy J7ZT March 30 2008, Madrid, Spain. Photo by Delfín González.

Unringed 3cy LBBG

LBBG 3cy April 09 2006, Dordrecht, the Netherlands.
LBBG 3cy April 09 2006, Dordrecht, the Netherlands.
LBBG 3cy April 14 2006, Dordrecht, the Netherlands.
3cy lbbg in March. (65815 bytes)LBBG 3cy March 15 2003, Boulogne/Mer, France. Tail moult.
arrested moult in April LBBG. (41805 bytes)LBBG 3cy April 19 2003, e-on - Maasvlakte, the Netherlands. Arrested primary moult at P7.
LBBG 3cy January 5 2001, Westkapelle, the Netherlands. New second generation primaries lack white tips and are tar black.
8597.jpg (78601 bytes)LBBG 3cy, January 03 2002, Boulogne-sur-Mer, France (50.42N,1.34E). Most of the scapulars and coverts brown-grey.
LBBG 3cy April 16 2001, Bairds strandje, Maasvlakte, the Netherlands.