Saw this on iNaturalist. Possible hybrid?

[Sherrie]

Saw this on iNaturalist. It's fairly close to me in Central Texas. Read the description and the comments. What do you guys think?

iNaturalist.org · Marcy's Checkered Gartersnake (Subspecies Thamnophis marcianus marcianus), observed by hydaticus on April 5, 2013 (http://www.inaturalist.org/observations/323505)

[guidofatherof5]

If it is a cross-bred animal it certainly is anything to write home about.

[Sherrie]

If it is a cross-bred animal it certainly is anything to write home about.

True, of course isn't that what they say about hybrids? And I have no idea either way, I just thought it was interesting.

[Stefan-A]

I'm leaning towards "Not a hybrid, just a fairly typical wildform T. marcianus".

[thamneil]

Looks like a run of the mill marcianus. Don't see anything unusual about it at all.