Found this gartersnake on a gravel road the other day. It is a Western Terrestrial (Wandering) gartersnake. We've been getting a lot of calls about these things this year, I think it has been a few good years for the garters in the area.
I think this one is likely gravid - fattest Wandering garter I've ever seen.
I didn't get a good picture of it's head flare, but it could flare it's head more than most bullsnakes I have seen (which makes them look venomous). It also repeatedly struck at me with open mouth, hissing - and looking venomous. I've never seen another garter put on this kind of display before.
One more picture. Most of the other wandering garters around here don't have as much of a definite strip
Ryan