Black-headed Gull

A leucistic adult - September 2009 Alan Hayden

Juvenile - July 2009 Alan Hayden

Juvenile - July 2008 Alan Hayden

Juvenile moulting to first-winter - July 2008 Alan Hayden

Adult in non-breeding plumage - late year 2007 Jean Southworth

First-summer plumage - May 2007 Alan Hayden

Black-headed Gull, a recently fledged juvenile - July 2005 Dave Masser

Adult in full breeding plumage - May 2005 Stephen North

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