HOLA amigos - don't feel too bad about the little snake; they are very VERY numerous, one estimate is 700 to 1800 per hectare or 300+ to an acre. They do their job of exterminating insect pests and are harmless so no need to go killing them, but the loss of one is not going to make a big dent in the population.
I could tell you a story about these ringneck snakes that would test your belief. My mother had bought a new carpet for her living room and asked me to help installing it, so I went over to lend a hand. We had the carpet laid out on her lawn marking and cutting to fit to the room, and suddenly little snakes (ringnecks) started climbing onto the new rug! My mother hated snakes and had quite a job trying to get rid of these little buggers, as fast as they could be swept up more and more kept crawling out of the grass and leaves onto the rug. We lost count of how many there were but without exaggerating there were well over 100! I had never seen a ringneck snake prior to that day. What I still cannot figure out to this day, was what on earth ever made those little snakes be so attracted to a new carpet? It was a powder blue shag-type, did have a little bit of a 'formaldehyde' smell but would that attract a snake? Strange but true, I swear!
Good luck and good hunting amigos, I hope you all find the treasures that you seek.
your friend,
Oroblanco