Black headed Gull (Chroicocephalus ridibundus) Winter plummage, Lancashire, UK Black headed Gull (Chroicocephalus ridibundus) Winter plumage. The plumage of gulls is a difficult one to follow and learn. The plumage takes a couple of seasons to develop into the adult plumage and full maturity. Until then each season is different with one winter different to the next, same with summer plumage's. In this image the Gulls are stepping in sync on the sea wall;
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Black headed Gull (Chroicocephalus ridibundus) Winter plummage_MG_6718RM.tiff