Yellow-legged
Gull- Geelpootmeeuw (L. michahellis): 1cy October
(last update: 08 december 2003)
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5264 (2 images): 1cy Yellow-legged Gull (L. michahellis), October 03 2002, Le Portel, NW France.
This 1cy michahellis has started the
partial moult in autumn (post-juvenile moult): the upper two tertials have been
shed; the inner greater coverts #1-2 are replaced and #3 is growing; median
coverts #2-4 are new, #5 is growing, #6 is missing and #7 is new, #8 is missing,
#9-10 & #13 are new.
In the lower lesser coverts #5-6 are replaced, #7-8 are missing, #10 is growing,
#11-12 new. About five lesser coverts are replaced for second generation
feathers. All feathers not mentioned are still juvenile.
A small number of michahellis (about 5%) moult some of the tail-feathers in autumn
of it's first calendar year. This individual has replaced two tail-feathers and
two tail-feathers are missing.
