Learn about nighttime birds of prey during an evening hike in the woods with a Buttonwood naturalist. The group will listen for owl calls and try to spot owls or other nocturnal creatures. Wear dark clothing and sturdy shoes. Bring a red-light flashlight if you have one. Participants get a free copy of the book “Hoot” by Carl Hiaasen, while supplies last. Free, but registration is required. Open to all ages. Limit: 30. For more information or to register, visit buttonwoodnaturecenter.org, call 717-762-0373 or email to info@buttonwoodnaturecenter.org.