Look again this gull shows up in Salisbury, looking like it has for the past 2 years before. What is the deal? Still extensive black in bill, still bluish/gray bill and legs,
Very interesting bird. Can't help but wonder what is in play here.

interesting gull same bird Feb. 2012 http://www.pbase.com/image/141966696
interesting gull same bird April 2011 http://www.pbase.com/suzsull/image/134211710