It was all sleepy because the basement is cold, so I decanted the snake safely into a plastic container. As soon as I've id'ed him and taken a picture, I'll let him go, but right now he's sitting pushed up against the side of the plastic, watching my hands alertly. When I lean in to look at him, he turns to look at that instead; smarter than your average mouse!
Something I guess I knew, but never thought about; snakes breathe. I just didn't realize they did it so visibly. It's fabulous watching this little heap of snake expand and shrink.