Black-headed Gull/Kokmeeuw
© Ruud Altenburg, 29-02-04. Erasmusgracht, Amsterdam. Adult Black-headed Gull (Chroicocephalus ridibundus) green CH41. Except at the Erasmusgracht, only observed at the ringing locality. Ringed as adult on 11-05-97 in Rautalampi, Finland. Adult Kokmeeuw (Chroicocephalus ridibundus) groen CH41. Geringd als adult op 11-05-97 in Rautalampi, Finland. Behalve op de Erasmusgracht verder alleen waargenomen op de plek van ringen.