Black-headed Gull - C. ridibundus

Black-headed Gull Chroicocephalus ridibundus (last update: 15-02-2013)
Moderators: Tim Audenaert Maarten van Kleinwee Home BHG 1cy May BHG 1cy June BHG 1cy July BHG 1cy August BHG 1cy September BHG 1cy October BHG 1cy November BHG 1cy December BHG 2cy January BHG 2cy Febuary BHG 2cy March BHG 2cy April BHG 2cy May BHG 2cy June BHG 2cy July BHG 2cy August BHG 2cy September BHG 2cy October BHG 2cy November BHG 2cy December BHG adult January BHG adult Febuary BHG adult March BHG adult April BHG adult May BHG adult June BHG adult July BHG adult August BHG adult September BHG adult October BHG adult November BHG adult December Hybrids Plumages	Black-headed Gull - Grey hind necks In non-breeding plumage, adult Black-headed Gulls acquire a grey hind neck, which can sometimes run over onto the head, breast and flanks. This feature is usually very subtle and most noticeable in diffuse lighting conditions, particularly in snowy conditions. Below: Black-headed Gulls with grey hind necks, 4 December 2010, Leiden, The Netherlands. Photo: Maarten van Kleinwee.