It's unlikly, but it could be Western Gull. With the constrast on this photo (thanks to the salt on the front lens) it's hard to know that's light or dark grey.

Camera:	Pentax Optio WPi
Date:	Saturday, May 13th, 2006 at 4:57 PM
Exposure:	1/100 sec at f4.0
ISO:	80 asa
Lens:	Built In Zoom Lens at 18.9mm (equivalent field of view of a 113mm lens on a 35mm camera)
Scientific Name:	species related to Larus glaucescens (glaucous-winged gull)
Tag:	bird
Larger image:	1500 x 2000
Raw image:	2816 x 2112