Black-headed Gull/Kokmeeuw
1: © Ruud Altenburg, 08-01-09. Baarsjesweg, Amsterdam; 2: © Ruud Altenburg, 10-01-09. Baarsjesweg, Amsterdam. Adult Black-headed Gull (Chroicocephalus ridibundus) red HR86. Ringed in Hungary; details will be added when the data is received. Adult Kokmeeuw (Chroicocephalus ridibundus) rood HR86. Geringd in Hongarije; details worden toegevoegd zodra de gegevens binnen zijn.