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

(last update: 19-2-2011)

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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

first calendar year: November-December

By November, many LBBG have left the colonies and surrounding feeding grounds near the Maasvlakte (the Netherlands) and have migrated south towards France, Portugal, Morocco and Senegal. By mid-November, several 100's LBBG may still stay near the Maasvlakte, probably as long as it's not freezing. By December, a couple of hundreds remain on continental NW Europe, as north as southern Netherlands along the coast at Westkapelle, 65 km south of the Maasvlakte (see map). As it seems, every year a larger group of LBBG stay "at the most northern latitude as possible", i.e. migrate south only when winter conditions or food supply force them to. They feed out on the North Sea and follow coasters and fishing trawlers in mixed flocks of mainly Herring Gull (argentatus and argenteus) and (in winter only a few) Yellow-legged (michahellis) and Caspian Gulls (cachinnans). 

Year 2000 had a rather mild winter with temperatures below zero as late as mid-December. At Westkapelle, ringed individuals from Scandinavia, Denmark, the Netherlands, Belgium and Britain were present. When winter really started in December, this group moved south as well, to unknown wintering grounds, probably the Atlantic coast of Western and SW Europe. 

The first weeks of November 2001 proved to be mild again and several 100's of LBBG (many adults) could be found at southern locations in the Netherlands: the Maasvlakte and Westkapelle. As in the previous year, red colour-ringed juveniles from the Maasvlakte (the Netherlands), a green colour-ringed 2cy LBBG from Helgoland (Germany) and blue colour-ringed juveniles from Vest-Agder (southern tip of Norway) were present, together with several metal-ringed juveniles from Belgium, Britain, Norway, Denmark, Sweden and the Netherlands. Westkapelle seems to be one of the best places to watch graellsii and intermedius LBBG  together from a short distance.


U.K. 1cy: graellsii
juvenile LBBG, ringed in the Netherlands. LBBG 1cy 1PF November 27 2005, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy 1K8 November 15 2009, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy 1Y4C December 01 2012, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy A5ZJ November 25 2007, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy AJ.AH November 30 2008, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy A+R November 28 2010, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy B+M December 12 2010, Madrid, Spain. Photo by Delfín González.

Belgium 1cy:
"Dutch intergrade" graellsii

2cy Dutch LBBG in February. (79773 bytes)LBBG 1cy DSAY November 05 2006, Madrid, Spain. Picture: Delfín González. Also as 1cy Nov.
1cy argenteus in November, ringed in Belgium. (25637 bytes)LBBG 1cy HPAN Westkapelle, the Netherlands, November 09 2008.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy LPAT December 12 2009, Madrid, Spain. Photo by Delfín González.
2cy Dutch LBBG in February. (79773 bytes)LBBG TCAC 1cy-2cy, December 2011 - February 2012, Madrid, Spain. Picture: Delfín González.
1cy LBBG in winter, ringed in the Netherlands. (81137 bytes)LBBG 1cy BLB L-91xx09 November 04 2010, Westkapelle, the Netherlands.

the Netherlands 1cy:
"Dutch intergrade" graellsii

juvenile LBBG, ringed in the Netherlands. LBBG 1cy 2Y December 02 2012, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy AS December 06 2012, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy 50 November 30 2008, Madrid, Spain. Photo by Delfín González.
1cy LBBG in winter, ringed in the Netherlands. (81137 bytes)LBBG 1cy J5 December 12 2010, Madrid, Spain. Photo by Delfín González.
juvenile LBBG in October, ringed in Norway. (131273 bytes)LBBG 1cy 04 November 10 2010, Santander, Cantabria, SPANJE (4.327,00 N, 347,00 W). Fernando Arce.
1cy LBBG in winter, ringed in the Netherlands. (81137 bytes)LBBG 1cy NLA 5.410.095 November 01 2002, Westkapelle, the Netherlands.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy E December 04 2010, Madrid, Spain. Photo by Delfín González.

N Germany 1cy:
transition graellsii - intermedius

juvenile LBBG, ringed in the Netherlands. LBBG 1cy HK90 November 02 2011, Utrecht, the Netherlands. Picture: Herman Bouman.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy H24K November 01 2006, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy H54A December 17 2006, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy H560 November 11 2007, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy HC63 November 21 2010, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy HC65 December 12 2010, Madrid, Spain. Photo by Delfín González.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy HJ39 November 18 2012, Madrid, Spain. Photo by Delfín González.
1cy LBBG in winter, ringed in the Netherlands. (78594 bytes)LBBG 1cy DEH 4273064 November 02 2003, Westkapelle, the Netherlands. Ringed on the isle of Helgoland, Germany.

Denmark 1cy: intermedius
LBBG intermedius in August, ringed in Norway. (71012 bytes)LBBG 1cy VM4L November 11 2012, Madrid, Spain. Photo by Delfín González.
LBBG intermedius in August, ringed in Norway. (71012 bytes)LBBG 1cy VR9L November 21 2012, Anza - Agadir, Morocco. Picture Christian Pedersen.

Norway 1cy: intermedius
juvenile LBBG, ringed in the Netherlands. LBBG 1cy J6Y3 December 12 2010, Madrid, Spain. Photo by Delfín González. From C. Norway.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy J824 November 05 2006, Madrid, Spain. Photo by Delfín González. From N. Norway.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy JR2Y November 24 2012, Anza, Morocco. Picture: Christian Pedersen.
juvenile LBBG, ringed in the Netherlands. LBBG 1cy J8NZ December 29 2006, Madrid, Spain. Photo by Delfín González.
juvenile LBBG in October, ringed in Norway. (131273 bytes)LBBG 1cy J0Y7 December 03 2003, Le Louroux-Béconnais, W France. Images Alain Fosse.