Squirrel eating Oak Gall

"As the name suggests, the eastern gray squirrel has predominantly gray fur, but it can have a brownish color. It has a usual white underside as compared to the typical brownish-orange underside of the fox squirrel.[8]"
http://en.wikipedia.org/wiki/Eastern_gra...

I think I mostly see S. carolinensis near Sacramento. :)

Best Bet would be to go thru my squirrel collection :) !

How about the eastern grey squirrel (S. carolinensis)? This is what I understood to be the common introduced species in urban areas.

Also, you linked the western grey squirrel twice. :)

http://www.projectnoah.org/spottings/433...
this is a California ground squirrel.
Fox,ground and hybrids are common out here in the East Bay.
Beldings and Gray are occasional.

Here is the fox.
http://www.projectnoah.org/spottings/191...

Here is the western Gray,
http://www.projectnoah.org/spottings/191...

Fox squirrel is an introduced species. The gray squirrel was the original.
I can share spots.

Cool, I didn't realize Sciurus niger occurred in CA. Do you happen to have any tips in distinguishing it from S. carolinensis?

great feedback. ! Squirrel is the Fox squirrel or a hybrid.

What do you want a name for? The oak, squirrel, or gall? Compare the oak with Quercus lobata, the squirrel with Sciurus griseus or S. carolinensis, and the galls with Andricus quercuscalifornicus.