Chipmunk? Raven? Gull

 There are three pictures  of  alive creatures I made yesterday with my Pixel Phone near Alameda Beach.

First one I believe is  chipmunk. Why not squirrel? There were plenty of them and no one climbed on the trees. And they all looked smaller and there tails were not bushy. But  chipmunk expected to be striped, and these were not. So I put question mark in the title.

Is this bird crow or raven? I do not know. The only bird I know for sure was raven is one which I saw in London Tower. For the rest I simply can't know the difference.

The last one is sea gull, no doubt.