I know we have some Ribbon experts lurking about here. I was wondering if anyone would be able to help me differentiate between Eastern and Western Ribbon snakes.
I have very little experience with Ribbons and my guides only cover Western North American animals. There doesn't seem to be any substantial info available online, what I find seems to be the same info for both with just a slight possible max size difference and of course locality.

Any help would be great regarding what to look for physically that would tell them apart.