WCPARC naturalist Elle Bogle leads a hike to see the dazzling prairie flowers and dragonflies of August in Northfield Woods. Bring binoculars if you have them. 8:30–10 a.m., Northfield Woods Preserve, 150 E. Northfield Church Rd., Northfield Twp. Free. Preregistration required at tinyurl.com/wcparc-events, registration #841009. Email questions to [email protected].