WCPARC naturalist Elle Bogle leads an expedition to catch, examine, and learn about the insect order that includes crickets, grasshoppers, and katydids. 10 a.m.–noon, Northfield Woods Preserve, 150 E. Northfield Church Rd., Whitmore Lake. Free, but preregistration required (#841009) at washtenaw.org/registerparks. Space is limited. [email protected].