Common Gull - WHITE [E27V] / black

Common gull (Larus canus), after 3rd calendar year
Leiden, The Netherlands, December 25, 2010. W[E27V] (Arnhem 3722829). Adult Common Gull in full winter (basic) plumage. This indidivual was ringed three weeks previous in Zoetermeer, just south of Leiden, and has apparently stayed in the area.
(Ring info: ringed at Zoetermeerseplas, Zoetermeer, December 3, 2010.)

Kokmeeuw (Chroicocephalus ridibundus), na 3de kalenderjaar
Leiden, Oude Rijn (t.h.v. Kooihaven), 25 december 2010. W[E27V] (Arnhem 3722829). Adulte Stormmeeuw in volledig winterkleed. Dit individu is drie weken geleden geringd in Zoetermeer, en blijft zich kennelijk binnen de regio ophouden.
(Ringdatum: 3 december 2010, Zoetermeerseplas, Zoetermeer.)