Larus cachinnans
(last update:
Greg Neubauer
Marcin Przymencki
Albert de Jong
Mars Muusse
cachinnans plumages
Larus michahellis 1cy, November 24 2006, Etaples, NW France. Picture: Ruud Altenburg.
The post-juvenile moult of
michahellis is similar to that
of cachinnans (in timing and extent; often there are coverts and upper tertials involved as well), but typically
the second-generation
feathers (visible here in the
scapulars, tertials and
coverts) are strongly
marked with bars and
anchors.Yellow-legged Gull
includes 0–100% of its
coverts in the post-juv
moult; this bird has had an average moult like
many and only a still lots of first generation
feathers are
visible in the wing. Herring
Gulls do not look like this
until mid July of their
second calendar-year.
