We had a group of middle and high school students on site today (I taught a lesson on identifying trees with dichotomous keys), and one of the kids found this little treasure.
This is a western painted turtle, Chrysemys picta bellii. (Other subspecies don’t have that gorgeous red and black pattern on the plastron, the lower shell.) It probably recently emerged from a nest laid in late summer or early fall last year; this far north, hatchlings overwinter in the nest and emerge in early spring.
After I took its portrait I released it on a wooded bank near the pond. I wish it well.