This gull was photographed at a landfill in Houston, Texas on December 28, 2005; it had underparts of the LBBG/YLGU/dark CASP type, and on structure it did not look like a LBBG. Soon after getting these pics the gulls all flushed, and I was unable to relocate this bird - but in hindsight it might be this individual found later at the site. :