Here on the Colorado plateau of AZ we have the large gopher snake (often called a bull snake by locals but actually in the same family as corn snakes) It's a very nice snake, I have seen many people pick up wild ones without upsetting the snake. They do a very convincing rattler impression pulling the corners of their mouth back hissing, and shaking their tail in the dead leaves. I have seen these guys eat eggs before, because sometimes after eating they get stuck in the chicken wire, and I have to cut them loose. They tend to keep the mice down so I figure a few eggs are no big deal.