This 4-foot long snake was seen just about 10 feet from one of the poles that hold up the bat mist nets, so pretty much right where we had to work all night. Surprisingly, after this sighting right at dusk we never did run into him again. And yes, he was rattling away at me when I took this photo.
Beautiful animals and always great to see them, and harmless if merely left alone to go about there business.