Looking for something fun and educational to do tonight? Look no further than ACES: Owl Walk at Rock Bottom Ranch in the mid-valley. Beginning at 5:30 pm, meet ACES's Great Horned Owl, a permanent resident at the Hallam Lake center, and learn about how owls have adapted to become impressive nocturnal hunters. Participants will then head out for a stroll around the preserve to look for owls. Don't forget to dress for the chilly nighttime temperatures. Details at www.aspennature.org.