The below Laughing Gull was photographed on the Chesapeake Bay Bridge Tunnel.  Note the unique bill and leg coloration.

Abberant Laughing Gull- note leg and bill coloration

The below Ring-billed Gull was photographed at the Henrico County Landfill.  Note the lack of bill pattern.

Abberant Ring-billed Gull

Abberant Ring-billed Gull