Lesser Black-backed Gull (graellsii & intermedius)

(last update: 14-11-2017 )


LBBG rings

lbbg 1cy May
lbbg 1cy June
lbbg 1cy July
lbbg 1cy August
lbbg 1cy September
lbbg 1cy October
lbbg 1cy November
lbbg 1cy December

lbbg 2cy January
lbbg 2cy February
lbbg 2cy March
lbbg 2cy April
lbbg 2cy May
lbbg 2cy June
lbbg 2cy July
lbbg 2cy August
lbbg 2cy September
lbbg 2cy October
lbbg 2cy November
lbbg 2cy December

lbbg 3cy January
lbbg 3cy February
lbbg 3cy March
lbbg 3cy April
lbbg 3cy May
lbbg 3cy June
lbbg 3cy July
lbbg 3cy August
lbbg 3cy September
lbbg 3cy October
lbbg 3cy November
lbbg 3cy December

lbbg sub-ad January
lbbg sub-ad February
lbbg sub-ad March
lbbg sub-ad April
lbbg sub-ad May
lbbg sub-ad June
lbbg sub-ad July
lbbg sub-ad August
lbbg sub-ad Sept
lbbg sub-ad Oct
lbbg sub-ad Nov
lbbg sub-ad Dec

lbbg adult January
lbbg adult February
lbbg adult March
lbbg adult April
lbbg adult May
lbbg adult June
lbbg adult July
lbbg adult August
lbbg adult September
lbbg adult October
lbbg adult November
lbbg adult December

sub-adult (4cy / 5cy): November

This page shows the variation of sub-adult Lesser Black-backed Gull in the months November to December.

The birds shown here are at least in 3rd winter plumage (3cy and older), at most in their 5th winter plumage. LBBG in 3cy and 4cy can look very much the same and in early winter, when the outer primaries are lost, it may be very hard to age them correctly. Those in 5cy are often recognized by and distinguished from adults by the black centres of the outer primary coverts. It has to be seen whether this feature completely rules out full-adults, since breeding LBBG in the colony (spring and summer) sometimes show this characteristic as well.

Some photographed sub-adults with rings show the difficulty and variation of specific ages during this sub-adult period.

the U.K.: graellsii
Lesser Black-backed Gull graellsii 6AN1 4CY-5CY, November 2015 - October 2016, Matosinhos beach, Matosinhos, Portugal. Picture: José Marques.
Lesser Black-backed Gull graellsii 7CC5 4CY, November 15 2016, Torreira beach, Aveiro, Portugal. Picture: José Marques.

Belgium: graellsii 'Dutch intergrade'


Lesser Black-backed Gull graellsii BLB L-62188 4CY, November 26 2000, Westkapelle, the Netherlands.
Lesser Black-backed Gull graellsii BLB L-84565 4CY, November 20 2000, Westkapelle, the Netherlands.
Primary moult score (PMS) of 44.
the Netherlands: graellsii 'Dutch intergrade'
Lesser Black-backed Gull graellsii K.AZX 2CY & 4CY, August 2014 & October-December 2016, the Netherlands & Portugal. Picture: Maarten van Kleinwee & José Marques.
Norway: intermedius

juvenile LBBG, ringed in the Netherlands.Lesser Black-backed Gull intermedius J37Y 4CY November 19 2006, Madrid, Spain. Photo by Delfín González.
6552jkm1.jpg (81226 bytes)Lesser Black-backed Gull intermedius JKM1 November 02 2002, Westkapelle, the Netherlands. Ringed in southern Norway.
juvenile LBBG in September, ringed in Norway. (73485 bytes)Lesser Black-backed Gull intermedius JZZ7 2cy-3cy-4cy, 2010-2012. Pictures Christian Pedersen, Maarten van Kleinwee & Theo Muusse.
unringed sub-adult LBBG in November

Lesser Black-backed Gull sub-adult, November 02 2015, Utrecht, the Netherlands.
Lesser Black-backed Gull sub-adult, November 09 2015, Utrecht, the Netherlands.
Lesser Black-backed Gull sub-adult, November 09 2015, Utrecht, the Netherlands.