Let the full moon illuminate your leisurely hike as you search and listen for the Denizens of the Dark. Barred, great horned, screech and barn owls might be some of the species you will hear and see silently swooping through the wilds of the Oxbow. Ages 10 and up, $5/pp, Pre-register; contact 772-785-5833 or oxbow@stlucieco.org; www.oxboweco.com.