So, I pulled up some photos from 2009 from the Firestone Center. This was a few years after the Reserve was set up, and we were still doing a lot of baseline stuff, like surveying the property to exacting detail while having the students taking on proper scientific analysis.
One day, we were up near the top of the property and spotted a parrot snake (likely Leptophis depressirostris, Cope's Parrot Snake). This snake is poisonous, but has rear fangs and unlikely to harm a human. Much.
The snake is green, but it is interesting how the green plays out. In the sun it is the same shade as leaves in the sun, while in the shadow it is the same shade of leaves in the shade. Here is the snake: