Lesser Black-backed Gull (graellsii & intermedius)(last update:
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lbbg 1cy May lbbg 2cy January lbbg 3cy Jan-April lbbg sub-ad Jan-April lbbg adult January |
sub-adult: 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. |
Ringed sub-adult birds |
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. | ||
LBBG 4cy L-62188 November 26 2000, Westkapelle, the Netherlands. Ringed in Belgium. | ||
LBBG 4cy L-84565 November 20 2000, Westkapelle, the Netherlands. Primary moult score (PMS) of 44. | ||
Lesser Black-backed Gull graellsii K.AZX 2CY & 4CY, August 2014 & October-December 2016, the Netherlands & Portugal. Picture: Maarten van Kleinwee & José Marques. | ||
LBBG 4cy J37Y November 19 2006, Madrid, Spain. Photo by Delfín González. | ||
Intermedius sub-adult JKM1 November 02 2002, Westkapelle, the Netherlands. Ringed in southern Norway. | ||
LBBG intermedius JZZ7 2cy-3cy-4cy, 2010-2012. Pictures Christian Pedersen, Maarten van Kleinwee & Theo Muusse. | ||
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. |