Ross's Gull at Santa Maria Sewage???

I took this picture in 2006. It is of a non-adult small gull in a sewage pond at Santa Maria Sewage with some Mallards. The light colored legs, the "lumpy" head and the odd shaped tail look good for Ross's Gull! Yipes! The photograph is dated Wednesday, November 01, 2006, 2:29:12 PM. Its number is DSCF6038.

My picture:

http://picasaweb.google.com/lawofficeofmarkbrown/MarkSBirds#5490379498703817346 .

The only record accepted by the Committee is an adult one November 17-19, 2006 at the Salton Sea.